A Third of Shark and Ray Species May Face Extinction

A Third of Shark and Ray Species May Face Extinction

The health of “entire ocean ecosystems” and food security is in jeopardy, said Dulvy, a former co-chair of the shark specialist group of the International Union for Conservation of Nature (IUCN).The number of species of sharks, rays, and chimaeras, known together as chondrichthyan fishes, facing “a global extinction crisis” has more than doubled in less than a decade, according to the paper published September 6 in the journal Current Biology.