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Into The Thresher

When hunting, a thresher shark’s tail moves so quickly that it lowers the water pressure in front of it, causing the water to boil.

Small bubbles are released and collapse again when the water pressure equalizes.

This process is called cavitation, and it releases huge amounts of energy, stunning its prey.

Cavitation is a very special form of boiling, the gas bubbles it creates rapidly collapse back into liquids, and when they do they cause surprisingly violent shockwaves in the water.

Because water is not compressible, the voids cause these regions to slam into each other with nowhere to splash, creating the cavitation/boiling effect.

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