Sharks and rays are some of the ocean's most amazing animals. Present in our seas for 400 million years, they are vital and valuable but also vulnerable.  Around a 1/3 of all shark, skate, ray and chimaera species are considered "threatened" with extinction, largely due to the impact of unsustainable fisheries.  The Shark Trust works globally to ensure endangered species of sharks are suitably protected, while also pushing for science-based fisheries management for all species to ensure long term sustainability.