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Thresher sharks hunt with weaponised tails

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Thresher sharks hunt with weaponised tails

Postby Helix » Thu Jul 11, 2013 1:34 pm

Thresher sharks use their tails to catch dinner. No surprises there. But the latest research shows that they don't use their tails in the way we thought they did.

The thresher accelerates towards a ball of fish and brakes sharply by twisting its large pectoral fins. It lowers its snout, pitches its whole body forward, and flexes the base of its tail. This slings the tail tip over its head like a trebuchet, with an average speed of 30 miles per hour. (The fastest shark managed to whip its tail at an astonishing top speed of 80 miles per hour.)


The rest of the story and a discussion of the suggested mechanism of action is at Not Exactly Rocket Science. There's also a short video of a shark doing what it says on the label.
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Re: Thresher sharks hunt with weaponised tails

Postby roughbarked » Thu Jul 11, 2013 2:32 pm

Helix wrote:Thresher sharks use their tails to catch dinner. No surprises there. But the latest research shows that they don't use their tails in the way we thought they did.

The thresher accelerates towards a ball of fish and brakes sharply by twisting its large pectoral fins. It lowers its snout, pitches its whole body forward, and flexes the base of its tail. This slings the tail tip over its head like a trebuchet, with an average speed of 30 miles per hour. (The fastest shark managed to whip its tail at an astonishing top speed of 80 miles per hour.)


The rest of the story and a discussion of the suggested mechanism of action is at Not Exactly Rocket Science. There's also a short video of a shark doing what it says on the label.



Nature constantly amazes us. Is the video downloadable? is the info I always need to know.. Because if it isn't too large and of interest, all of this stuff plays fine at home but cannot stream over the net.
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