Many species of open ocean shark are under serious threat, according to an assessment by the International Union for Conservation of Nature (IUCN).
The Red list gives the status of 64 types of shark and ray, over 30% of which are threatened with extinction. The authors, IUCN's Shark Specialist Group, say a main cause is overfishing.
Wednesday, Sep 20th
Last update05:20:13 AM GMT
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