2012年6月21日 星期四

BBC News - Home: Slowest shark hunts sleeping prey

BBC News - Home
The latest stories from the Home section of the BBC News web site.
thumbnail Slowest shark hunts sleeping prey
Jun 22nd 2012, 02:11

Greenland sharks swim so slowly that they must sneak up on seals as they sleep in order to catch them, research suggests.

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