A specialized claw of the pistol shrimp creates a localized pressure wave by bubble collapse.

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"This process is known as cavitation, and the energy generated by it almost defies belief; the collapsing gas bubbles create explosive plasma balls that, for an instant, reach 5000 C - almost the temperature of the Sun." (Downer 2002)

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Weird Nature: An Astonishing Exploration of Nature's Strangest BehaviorMarch 2, 2002
John Downer

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