List of threatened rays
The market for shark and ray products is first and foremost a luxury one... The gill plates, in the case of manta rays, are used in China for a tonic soup that has become fashionable because of its perceived medicinal properties, even though it is not in the traditional Chinese pharmacopoeia. This is a recent trend and has caused the demise of some population of manta ray to decrease by up to 86% in the last six to eight years.
Threatened rays are those vulnerable to endangerment (extinction) in the near future. The International Union for Conservation of Nature (IUCN) is the world’s oldest global environmental organization.[4] It evaluates threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened:[5]
The term threatened strictly refers to these three categories (critically endangered, endangered and vulnerable), while vulnerable is used to refer to the least at risk of these categories.[5] The terms can be used somewhat interchangeably, as all vulnerable species are threatened, all endangered species are vulnerable and threatened, and all critically endangered species are endangered, vulnerable and threatened. Threatened species are also referred to as a red-listed species, as they are listed in the IUCN Red List of Threatened Species.[6]
Together rays and sharks make up the class of modern cartilaginous fishes. Modern fish are either cartilaginous or bony. Cartilaginous fishes have skeletons made of cartilage while bony fishes have skeletons made of bone. Because rays and sharks are closely related, they are often studied together. In 2010 a global IUCN study of vertebrates found that of 1,044 cartilaginous (ray and shark) species examined, 345 or 33% were threatened with extinction.[7][8]
There are four orders of rays: stingrays, skates, electric rays and sawfishes. Like sharks, rays are relatively long living and thrive in stable populations. They are K-strategists which grow slowly, mature late sexually and produce few offspring. They cannot recover as rapidly as many faster growing fish can if their populations are depleted.[9] As with sharks, rays are increasingly becoming vulnerable because of commercial and recreational fishing pressures, the impact of non-ray fisheries on the seabed and ray prey species, and other habitat alterations such as damage and loss from coastal development and marine pollution.[10] Most particularly, the continuing decline of threatened rays and sharks is the consequence of unregulated fishing.[11]
Manta rays are largest rays in the world, with wingspans reaching 7 metres.[13] They have one of the highest brain-to-body mass ratios of all fish.[14] Manta populations suffer when they are caught as bycatch by fishermen fishing for other species, but fisheries which target manta rays are even more harmful. Manta rays use their gills to filter plankton from the sea. Demand for their dried gill rakers, cartilaginous structures protecting the gills, has been growing in traditional Chinese medicine practices.[15] The market is "bogus" since dried manta gills have never been used historically in Chinese medicine, and there is no evidence that the gills have any medicinal value.[13][16][17] The flesh is edible and is consumed in some countries, but is tough and unattractive compared to other fish. To fill the growing demand in Asia for gill rakers, targeted fisheries have developed in other parts of the world, including Sri Lanka, Indonesia, West Africa and Central and South America.[18] Each year, thousands of manta rays, primarily the giant manta ray, are being caught and killed purely for their gill rakers. A fisheries study in Sri Lanka estimated that over a thousand of these were being sold in the country's fish markets each year.[19]
In 2011, manta rays became strictly protected in international waters thanks to their recent inclusion in the Convention on Migratory Species of Wild Animals. The CMS is an international treaty organization concerned with conserving migratory species and habitats on a global scale. Although individual nations were already protecting manta rays, the fish often migrate through unregulated waters, putting them at increased risk from overfishing.[20] In 2013, the Convention on International Trade in Endangered Species (CITES) listed both species of manta rays as CITES Appendix II species. This means that the international trade of manta rays will now be monitored and regulated.[2][21]
Sawfish are a less well known family of rays which have a long rostrum resembling a saw. Some species can reach 7 metres or 23 feet in length.[22][23][24] All species of sawfish are either endangered or critically endangered as a result of habitat destruction and overfishing.[12] Their young stay close to shore, and are particularly affected by coastal developments.[25] Because their rostrum is easily entangled, sawfishes can easily become bycatch in fishing nets. They are also exploited for the novelty value of their rostrum, their fins are eaten as a delicacy in China, and their liver oil used as a food supplement. While arguing for a global ban on international commerce in 2007, a representative from the National Museums of Kenya stated, "Only the meat is consumed locally; and artisanal fishermen can retire after catching one sawfish due to the high value of a single rostrum, up to $1,450."[12] In 2013 CITES uplisted the largetooth sawfish to Appendix I. This is CITES highest protection level, and means that all international trade of the species is banned.[26][27]
See also
References
- 1 2 Marshall, A., Bennett, M.B., Kodja, G., Hinojosa-Alvarez, S., Galvan-Magana, F., Harding, M., Stevens, G. & Kashiwagi, T. (2011). "Manta birostris". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- 1 2 Proposal 46: Genus Manta CITES, Sixteenth meeting of the Conference of the Parties Bangkok (Thailand), 3–14 March 2013.
- ↑ The fight to save threatened sharks and rays WWF, 6 March 2013.
- ↑ International Union for Conservation of Nature (IUCN) Encyclopædia Britannica. Retrieved 16 March 2013.
- 1 2 "Guidelines for Using the IUCN Red List Categories and Criteria" (PDF). IUCN. August 2010. Archived from the original (PDF) on 21 February 2011. Retrieved 2012-09-05.
- ↑ "Red List Overview". IUCN Red List. International Union for Conservation of Nature.
- ↑ Third of Shark and Ray Species Are Threatened, Study Suggests Science News, 27 October 2010.
- ↑ Hoffmann M, C Hilton-Taylor and 173 others (2010) "The impact of conservation on the status of the world's vertebrates" Science, 330: 1503–1509. doi:10.1126/science.1194442
- ↑ Conservation of Sharks CITES AC18 Inf. 1, 2002.
- ↑ "The Greatest Threats to Sharks". Oceana. 2007. Archived from the original on 2009-06-03. Retrieved 2009-08-29.
- ↑ The Future of Sharks: A Review of Action and Inaction CITES AC25 Inf. 6, 2011.
- 1 2 3 Black, Richard (June 11, 2007). "Sawfish protection acquires teeth". BBC News.
- 1 2 Glider of the sea threatened by 'traditional' medicine New Scientist, 25 March 2013.
- ↑ Ari, C. (2011). "Encephalization and brain organization of mobulid rays (Myliobatiformes, Elasmobranchii) with ecological perspectives" (PDF). Open Anatomy Journal 3: 1–13. doi:10.2174/1877609401103010001.
- ↑ Wassener, Bettina (2013-03-12). "No species is safe from burgeoning wildlife trade". The New York Times. Retrieved 2013-03-13.
- ↑ Manta Rays Endangered by Sudden Demand from Chinese Medicine ScientificAmerican, 17 January 2012.
- ↑ "The global threat to manta and mobula rays" WildAid and Shark Savers. 2011 report.
- ↑ "Manta Fisheries". The Manta Trust. 2011. Retrieved 2013-02-21.
- ↑ "Sri Lanka Manta Project". The Manta Trust. 2011. Retrieved 2013-02-21.
- ↑ "COP10 Outcome: Migratory Manta Ray under CMS Protection". Convention on Migratory Species. UNEP; CMS. 2011-11-25. Retrieved 2013-02-19.
- ↑ CITES conference takes decisive action to halt decline of tropical timber, sharks, manta rays and a wide range of other plants and animals
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2011). "Pristis microdon" in FishBase. February 2011 version.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2011). "Pristis perotteti" in FishBase. February 2011 version.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2011). "Pristis pristis" in FishBase. February 2011 version.
- ↑ Sawfish Is First Sea Fish on U.S. Endangered List National Geographic News, 4 June 2003.
- ↑ Proposal 45: Pristis microdon CITES, Sixteenth meeting of the Conference of the Parties Bangkok (Thailand), 3–14 March 2013.
- ↑ "CITES Appendices I, II and III". Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Retrieved 7 March 2013.
- 1 2 White, W.T. (2006). "Aetobatus flagellum". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Aetobatus flagellum" in FishBase. March 2013 version.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Aetomylaeus maculatus" in FishBase. March 2013 version.
- ↑ Kyne, P.M., Compagno, L.J.V. & Bennett, M.B. (2003). "Aetomylaeus nichofii". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Aetomylaeus nichofii" in FishBase. March 2013 version.
- ↑ White, W.T. (2006). "Aetomylaeus vespertilio". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Aetomylaeus vespertilio" in FishBase. March 2013 version.
- ↑ Kulka, D.W., Sulikowski, J., Gedamke, J., Pasolini, P. & Endicott, M. (2009). "Amblyraja radiata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Amblyraja radiata" in FishBase. March 2013 version.
- ↑ D'Anastasi, B., Simpfendorfer, C. & van Herwerden, L. (2013). "Anoxypristis cuspidata". IUCN Red List of Threatened Species. Version 2013.1. International Union for Conservation of Nature. Retrieved 26 August 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Anoxypristis cuspidata" in FishBase. March 2013 version.
- ↑ Last, P.R. & Kyne, P.M. (2006). "Aptychotrema timorensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Aptychotrema timorensis" in FishBase. March 2013 version.
- ↑ Hozbor, N., Massa, A & Vooren, C.M. (2004). "Atlantoraja castelnaui". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Atlantoraja castelnaui" in FishBase. March 2013 version.
- ↑ Massa, A., Hozbor, N. & Vooren, C.M. (2006). "Atlantoraja cyclophora". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Atlantoraja cyclophora" in FishBase. March 2013 version.
- ↑ San Martín, J.M., Stehmann, M.F.W. & Kyne, P.M. (2007). "Atlantoraja platana". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Atlantoraja platana" in FishBase. March 2013 version.
- ↑ McCormack, C., Lamilla, J., San Martín, M.J. & Stehmann, M.F.W. (2007). "Bathyraja griseocauda". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Graytail griseocauda" in FishBase. March 2013 version.
- ↑ Rincon, G. (2004). "Benthobatis kreffti". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Benthobatis kreffti" in FishBase. March 2013 version.
- ↑ Charvet-Almeida, P. & de Almeida, M.P. (2006). "Dasyatis colarensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dasyatis colarensis" in FishBase. March 2013 version.
- ↑ Kyne, P.M., Pollard, D.A. & Bennett, M.B. (2003). "Dasyatis fluviorum". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dasyatis fluviorum" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2005). "Dasyatis garouaensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dasyatis garouaensis" in FishBase. March 2013 version.
- ↑ Vidthayanon, C. (2011). "Dasyatis laosensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dasyatis laosensis" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. & Marshall, L.J. (2009). "Dasyatis margarita". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dasyatis margarita" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2009). "Dasyatis ukpam". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dasyatis ukpam" in FishBase. March 2013 version.
- ↑ Caldas, J.P., de Carvalho, M.R. & McCord, M.E. (2006). "Diplobatis colombiensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Diplobatis colombiensis" in FishBase. March 2013 version.
- ↑ Caldas, J.P., de Carvalho, M.R. & McCord, M.E. (2006). "Diplobatis guamachensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Diplobatis guamachensis" in FishBase. March 2013 version.
- ↑ de Carvalho, M.R., McCord, M.E. & Bizzarro, J.J. (2006). "Diplobatis ommata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Diplobatis ommata" in FishBase. March 2013 version.
- ↑ de Carvalho, M.R. & McCord, M.E. (2006). "Diplobatis pictus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Diplobatis pictus" in FishBase. March 2013 version.
- ↑ Stevens, J.D. & Valenti, S.V. (2009). "Dipturus australis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dipturus australis" in FishBase. March 2013 version.
- ↑ Dulvy, N.K., Notarbartolo di Sciara, G., Serena, F., Tinti, F. & Ungaro, N., Mancusi, C. & Ellis, J. (2006). "Dipturus batis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dipturus batis" in FishBase. March 2013 version.
- ↑ Brash, J.M., Séret, B. & Compagno, L.J.V. (2006). "Dipturus crosnieri". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dipturus crosnieri" in FishBase. March 2013 version.
- ↑ Dulvy, N.K. (2003). "Dipturus laevis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dipturus laevis" in FishBase. March 2013 version.
- ↑ Kyne, P.M. (2007). "Dipturus mennii". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dipturus mennii" in FishBase. March 2013 version.
- ↑ Lamilla, J. & Massa, A. (2007). "Dipturus trachydermus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Dipturus trachydermus" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2009). "Electrolux addisoni". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Electrolux addisoni" in FishBase. March 2013 version.
- ↑ Marshall, A.D. & Last, P.R. (2006). "Glaucostegus granulatus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Glaucostegus granulatus" in FishBase. March 2013 version.
- ↑ White, W.T. & Marshall, A.D. (2006). "Glaucostegus thouin". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Glaucostegus thouin" in FishBase. March 2013 version.
- ↑ White, W.T. & McAuley, R. (2003). "Glaucostegus typus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Glaucostegus typus" in FishBase. March 2013 version.
- ↑ Rincon, G. (2004). "Gurgesiella dorsalifera". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Gurgesiella dorsalifera" in FishBase. March 2013 version.
- ↑ Vooren, C.M., Piercy, A.N., Snelson Jr., F.F., Grubbs, R.D., Notarbartolo di Sciara, G. & Serena, S. (2007). "Gymnura altavela". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Gymnura altavela" in FishBase. March 2013 version.
- ↑ White, W.T. (2006). "Gymnura zonura". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Gymnura zonura" in FishBase. March 2013 version.
- ↑ de Carvalho, M.R. & McCord, M.E. (2009). "Heteronarce garmani". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Heteronarce garmani" in FishBase. March 2013 version.
- ↑ Manjaji, B.M., Fahmi & White, W.T. (2009). "Himantura gerrardi". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura gerrardi" in FishBase. March 2013 version.
- ↑ Vidthayanon, C., Baird, I. & Hogan, Z. (2011). "Himantura chaophraya". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura chaophraya" in FishBase. March 2013 version.
- ↑ White, W., Manjaji, M. & Fahmi (2009). "Himantura hortlei". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura hortlei" in FishBase. March 2013 version.
- ↑ Vidthayanon, C. & Manjaji, M. (2009). "Himantura kittipongi". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura kittipongi" in FishBase. March 2013 version.
- ↑ Rigby, C., Moore, A. & Rowat, D. (2012). "Himantura leoparda". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura leoparda" in FishBase. March 2013 version.
- ↑ Manjaji, M., Fahmi, & White, W. (2009). "Himantura lobistoma". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura lobistoma" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2005). "Himantura oxyrhyncha". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura oxyrhyncha" in FishBase. March 2013 version.
- ↑ Manjaji, B.M., Last, P.R. & Fahmi, White, W.T. (2009). "Himantura pastinacoides". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura pastinacoides" in FishBase. March 2013 version.
- ↑ Vidthayanon, C., Baird, I. & Hogan, Z. (2011). "Himantura polylepis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura polylepis" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2005). "Himantura signifer". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura signifer" in FishBase. March 2013 version.
- ↑ White, W.T. & Manjaji, B.M. & Fahmi (2009). "'". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura uarnacoides" in FishBase. March 2013 version.
- ↑ Manjaji, B.M. & White, W.T. (2009). "Himantura uarnak". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura uarnak" in FishBase. March 2013 version.
- ↑ Rigby, C. (2012). "Himantura undulata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Himantura undulata" in FishBase. March 2013 version.
- ↑ Ungaro, N., Serena, F., Ellis, J., Dulvy, N., Tinti, F., Bertozzi, M., Mancusi, C. & Notarbartolo di Sciara, G. (2009). "Leucoraja circularis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Leucoraja circularis" in FishBase. March 2013 version.
- ↑ Ungaro, N., Serena, F., Dulvy, N.K., Tinti, F., Bertozzi, M., Pasolini, P., Mancusi, C., Notarbartolo di Sciara, G (2006). "Leucoraja melitensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Leucoraja melitensis" in FishBase. March 2013 version.
- ↑ Kulka, D.W., Sulikowski, J. & Gedamke, T. (2009). "Leucoraja ocellata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Leucoraja ocellata" in FishBase. March 2013 version.
- ↑ Kyne, P.M. & Last, P.R. (2006). "Myliobatis hamlyni". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Myliobatis hamlyni" in FishBase. March 2013 version.
- ↑ Sulikowski, J., Kulka, D., Gedamke, T. & Barker, A. (2009). "Malacoraja senta". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Malacoraja senta" in FishBase. March 2013 version.
- ↑ Marshall, A., Kashiwagi, T., Bennett, M.B., Deakos, M., Stevens, G., McGregor, F., Clark, T., Ishihara, H. & Sato, K. (2011). "Manta alfredi". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Manta alfredi" in FishBase. March 2013 version.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Manta birostris" in FishBase. March 2013 version.
- ↑ Notarbartolo di Sciara, G., Serena, F. & Mancusi, C. (2006). "Mobula mobular". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Mobula mobular" in FishBase. March 2013 version.
- ↑ Valenti, S.V. & Kyne, P.M. (2009). "Mobula rochebrunei". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Mobula rochebrunei" in FishBase. March 2013 version.
- ↑ Carvalho, M.R. de, McCord, M.E. & Myers, R.A. (2007). "Narcine bancroftii". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Narcine bancroftii" in FishBase. March 2013 version.
- ↑ de Carvalho, M.R. & McCord, M.E. (2006). "Narcine brevilabiata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Narcine brevilabiata" in FishBase. March 2013 version.
- ↑ Carvalho, M.R. de & McCord, M.E. (2009). "Narke japonica". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Narke japonica" in FishBase. March 2013 version.
- ↑ Moore, A. & Jawad, L.A. (2009). "Okamejei pita". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Okamejei pita" in FishBase. March 2013 version.
- ↑ Fahmi, White, W., Manjaji, B.M., Vidthayanon, C., Badi, S. & Capuli, E. (2009). "Pastinachus solocirostris". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Pastinachus solocirostris" in FishBase. March 2013 version.
- ↑ Ishihara, H., Wang, Y., Tanaka, S. & Nakaya, K. (2009). "Platyrhina sinensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Platyrhina sinensis" in FishBase. March 2013 version.
- ↑ Kyne, P.M., Rigby, C. & Simpfendorfer, C. (2013). "Pristis clavata". IUCN Red List of Threatened Species. Version 2013.1. International Union for Conservation of Nature. Retrieved 26 August 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Pristis clavata" in FishBase. March 2013 version.
- ↑ Carlson, J., Wiley, T. & Smith, K. (2013). "Pristis pectinata". IUCN Red List of Threatened Species. Version 2013.1. International Union for Conservation of Nature. Retrieved 26 August 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Pristis pectinata" in FishBase. March 2013 version.
- ↑ Kyne, P.M., Carlson, J. & Smith, K. (2013). "Pristis pristis". IUCN Red List of Threatened Species. Version 2013.1. International Union for Conservation of Nature. Retrieved 26 August 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Pristis pristis" in FishBase. March 2013 version.
- ↑ Simpfendorfer, C. (2013). "Pristis zijsron". IUCN Red List of Threatened Species. Version 2013.1. International Union for Conservation of Nature. Retrieved 26 August 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Pristis zijsron" in FishBase. March 2013 version.
- ↑ Ishihara, H., Wang, Y., Tanaka, S., Nakaya, K. & Jeong, C-H. (2009). "Raja pulchra". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Raja pulchra" in FishBase. March 2013 version.
- ↑ Coelho, R., Bertozzi, M.,Ungaro. N. & Ellis, J. (2009). "Raja undulata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Raja undulata" in FishBase. March 2013 version.
- ↑ McAuley, R. & Compagno, L.J.V. (2003). "Rhina ancylostoma". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhina ancylostoma" in FishBase. March 2013 version.
- ↑ Séret, B. & Valenti, S.V. (2009). "Rhinobatos albomaculatus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos albomaculatus" in FishBase. March 2013 version.
- ↑ Notarbartolo di Sciara, G., Bradai, M.N., Morey, G., Brahim, K., Camara L., Litvinov, F., Dulvy, N. Doumbouya, F., Ducrocq, M., Heenan, A. & Sidi, N. (2007). "Rhinobatos cemiculus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos cemiculus" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V., Ishihara, H. & Marshall, A.D. (2006). "Rhinobatos formosensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos formosensis" in FishBase. March 2013 version.
- ↑ Lessa, R. & Vooren, C.M. (2007). "Rhinobatos horkelii". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos horkelii" in FishBase. March 2013 version.
- ↑ Séret, B. & Valenti, S.V. (2009). "Rhinobatos irvinei". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos irvinei" in FishBase. March 2013 version.
- ↑ White, W.T. (2006). "Rhinobatos jimbaranensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos jimbaranensis" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. & Marshall, A.D. (2006). "Rhinobatos obtusus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos obtusus" in FishBase. March 2013 version.
- ↑ White, W.T. (2006). "Rhinobatos penggali". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos penggali" in FishBase. March 2013 version.
- ↑ Notarbartolo di Sciara, G., Bradai, M.N., Morey, G., Marshall, A.D., Compagno, L.J.V., Mouni, A., Hicham, M., Bucal, D., Dulvy, N., Heenan, A. & Rui Coelho. (2007). "Rhinobatos rhinobatos". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinobatos rhinobatos" in FishBase. March 2013 version.
- ↑ Vooren, C.M. & Lamónaca, A.F. (2004). "Rhinoptera brasiliensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinoptera brasiliensis" in FishBase. March 2013 version.
- ↑ Dudley, S.F.J, Kyne, P.M. & White, W.T. (2006). "Rhinoptera javanica". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinoptera javanica" in FishBase. March 2013 version.
- ↑ McCormack, C., Lamilla, J., San Martín, M.J. & Stehmann, M.F.W. (2007). "Rhinoraja albomaculata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhinoraja albomaculata" in FishBase. March 2013 version.
- ↑ White, W.T. and McAuley, R. (2003). "Rhynchobatus australiae". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhynchobatus australiae" in FishBase. March 2013 version.
- ↑ Dudley, S.F.J. and Cavanagh, R.D. (2006). "Rhynchobatus djiddensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhynchobatus djiddensis" in FishBase. March 2013 version.
- ↑ McAuley, R. and Compagno, L.J.V. (2003). "Rhynchobatus laevis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhynchobatus laevis" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. and Marshall, A.D. (2006). "Rhynchobatus luebberti". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhynchobatus luebberti" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. and Marshall, A.D. (2006). "Rhynchobatus sp. nov. A". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhynchobatus palpebratus" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. and Marshall, A.D. (2006). "Rhynchobatus springeri". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rhynchobatus springeri" in FishBase. March 2013 version.
- ↑ Kyne, P.M., San Martín, J. & Stehmann, M.F.W. (2007). "Rioraja agassizii". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rioraja agassizii" in FishBase. March 2013 version.
- ↑ Dulvy, N.K., Pasolini, P., Notarbartolo di Sciara, G. Serena, F., Tinti, F., Ungaro, N., Mancusi, C. & Ellis, J.E. (2006). "Rostroraja alba". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Rostroraja alba" in FishBase. March 2013 version.
- ↑ Treloar, M.A. (2009). "Spiniraja whitleyi". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Spiniraja whitleyi" in FishBase. March 2013 version.
- ↑ Massa, A. & Hozbor, N. (2004). "Sympterygia acuta". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Sympterygia acuta" in FishBase. March 2013 version.
- ↑ Kyne, P.M. & White, W.T. (2006). "Taeniurops meyeni". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Taeniurops meyeni" in FishBase. March 2013 version.
- ↑ Carvalho, M.R. de, McCord, M.E. & Vidthayanon, C. (2009). "Temera hardwickii". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Temera hardwickii" in FishBase. March 2013 version.
- ↑ Stevens, J.D. (2009). "Trygonorrhina melaleuca". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Trygonorrhina melaleuca" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2005). "Urogymnus asperrimus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urogymnus asperrimus" in FishBase. March 2013 version.
- ↑ Compagno, L.J.V. (2009). "Urogymnus ukpam". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urogymnus ukpam" in FishBase. March 2013 version.
- ↑ Last, P.R. & Marshall, L.J. (2006). "Urolophus bucculentus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urolophus bucculentus" in FishBase. March 2013 version.
- ↑ Last, P.R. & Marshall, L.J. (2006). "Urolophus javanicus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urolophus javanicus" in FishBase. March 2013 version.
- ↑ Last, P.R., Kyne, P.M. & Marshall, L.J. (2006). "Urolophus orarius". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urolophus orarius" in FishBase. March 2013 version.
- ↑ Last, P.R. & Marshall, L.J. (2006). "Urolophus sufflavus". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urolophus sufflavus" in FishBase. March 2013 version.
- ↑ Last, P.R. & Marshall, L.J. (2006). "Urolophus viridis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urolophus viridis" in FishBase. March 2013 version.
- ↑ Robertson, R. & Valenti, S.V. (2009). "Urotrygon reticulata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urotrygon reticulata" in FishBase. March 2013 version.
- ↑ Robertson, R. & Valenti, S.V. (2009). "Urotrygon simulatrix". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Urotrygon simulatrix" in FishBase. March 2013 version.
- ↑ Vooren, C.M., Lamónaca, A.F., Massa, A. & Hozbor, N. (2006). "Zapteryx brevirostris". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Zapteryx brevirostris" in FishBase. March 2013 version.
- ↑ Kyne ,P.M., Lamilla, J., Licandeo, R.R., Jimena San Martín, M., Stehmann, M.F.W. & McCormack, C. (2007). "Zearaja chilensis". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Zearaja chilensis" in FishBase. March 2013 version.
- ↑ Gledhill, D. & Last, P. (2005). "Zearaja maugeana". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 10 March 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Zearaja maugeana" in FishBase. March 2013 version.
Further reading
- Camhi, M.D; Valenti, S.V.; Fordham, S.V.; Fowler, S.L.; Gibson, C., ed. (February 2007). "The Conservation Status of Pelagic Sharks and Rays" (PDF). Pelagic Shark Red List Workshop. Oxford, England: IUCN Shark Specialist Group. ISBN 978-0-9561063-1-5. Retrieved April 3, 2012.
- Dulvy, N.K., Baum, J.K., Clarke, S., Compagno, L.J.V., Cortés, E., Domingo, A., Fordham, S., Fowler, S., Francis, M.P., Gibson, C., Martínez, J., Musick, J.A., Soldo, A., Stevens, J.D. and Valenti, S. (2008) "You can swim but you can’t hide: The global status and conservation of oceanic pelagic sharks and rays" Aquatic Conservation: Marine and Freshwater Ecosystems, 18 (5): 459–482.
- FAO (2000) Conservation and Management of Sharks Technical Guidelines for Responsible Fisheries, Rome. ISBN 92-5-104514-3.
- Faria VV, McDavitt MT, Charvet P, Wiley TR, Simpfendorfer CA and Naylor GJP (2013) "Species delineation and global population structure of Critically Endangered sawfishes (Pristidae)" Zoological Journal of the Linnean Society, 167 (1): 136–164. doi:10.1111/j.1096-3642.2012.00872.x
- Fowler SL, Cavanagh RD, Camhi M, Burgess GH, Cailliet GM, Fordham SV, Simpfendorfer CA and Musick JA (comp. and ed.) (2005) Sharks, Rays and Chimaeras: The Status of the Chondrichthyan Fishes IUCN Shark Specialist Group, Status Survey. ISBN 2-8317-0700-5.
- Musick, John A and Bonfil, Ramón (2005) Management techniques for elasmobranch fisheries Fisheries Technical Paper 474, FAO, Rome.
- Teutscher, Frans (2004) "Sharks (Chondrichthyes)" In: World markets and industry of selected commercially-exploited aquatic species with an international conservation profile, Camillo Catarci. Fisheries Circular 990, FAO
- Endangered and Threatened Species Under NMFS’ Jurisdiction National Marine Fisheries Service, NOAA. Updated: 28 February 28, 2013.
External links
- Protecting the fragile manta rays of the Maldives BBC, 5 March 2012.
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