Page last updated at 00:36 GMT, Monday, 17 November 2008

Ocean motion caught on camera

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It is as thick as your arm, gloopy and smells disgusting - and it has just been caught on camera for what is believed to be the first time.

A crew has managed to film a whale shark - the world's biggest fish - expelling food waste, which was then scooped up for research.

The footage forms part of a BBC Natural World wildlife programme: Whale Shark.

Whale Shark is on BBC Two on Tuesday 18 November at 2000 GMT.

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