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Last Updated: Thursday May 22 2008 14:19 GMT

Coral sharks need more protection

A reef shark

Sharks living off the Australian coast could be swimming into trouble unless their home is protected, warn experts.

The World Wildlife Fund (WWF) says the Coral Sea, which is home to hammerhead and reef sharks, is one of the last great marine wilderness areas on Earth.

But because the area isn't protected, they're warning that sharks are at risk of being wiped out by over-fishing.

Experts want the Coral Sea to be made into a marine protected area and say fishermen agree something must be done.

Although the number of reef sharks in the Coral Sea is good at the moment, in other parts of the world their populations have been devastated and the WWF says it wants to make sure that doesn't happen again.