Curious Minute answer
Which small marine animal snaps a specialized claw to make a powerful shock wave?
The answer
Pistol shrimp
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Why it's right
The pistol shrimp snaps a specialized claw so quickly that it creates a cavitation bubble. When the bubble collapses, it produces a loud pulse that can stun prey. The sound is produced by the collapsing bubble rather than simply by the claw's surfaces hitting each other.
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Sources: Wikipedia