Wednesday, Apr 16th
Last update06:54:53 PM GMT
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.
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