One-quarter of sharks and rays at risk of extinction

One-quarter of sharks and rays at risk of extinction

One-quarter of sharks and rays at risk of extinction Cavalier & Blue Marlin Sport Fishing Gran Canaria

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, 21 January 2014

A quarter of the world's sharks and rays are at risk of extinction, according to a new assessment by the International Union for Conservation of Nature (IUCN). The latest update to the IUCN's "Red List" of threatened species, which found ray species to be at higher risk than sharks, is part of a first-ever global analysis of these marine species.

Researchers assessed the conservation status of 1,041 shark, ray and chimaera species, which are all so-called "cartilaginous fish," meaning they have skeletons made of cartilage rather than bone. A chimaera is type of jawed fish closely related to sharks and rays.

The researchers found that sharks, rays and chimaeras face a substantially higher risk of extinction than do most other animals. In fact, only 23 percent of shark, ray and chimaera species are categorized as being safe, or of "least concern," IUCN officials said.

source: Fox News

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