A shrimp's punch is so fast it boils the water and flashes with light

The peacock mantis shrimp swings its club-like forelimb with the acceleration of a fired bullet, reaching speeds over 20 metres per second in under a tenth of a millisecond. The strike moves so fast it makes the water in front of it boil, forming cavitation bubbles that collapse with a burst of heat briefly approaching the Sun's surface temperature, and a flash of light. Prey gets hit twice: once by the club, and again by the shockwave of the collapsing bubble, even if the first strike misses.

— Sheila Patek et al., Deadly Strike Mechanism of a Mantis Shrimp — Nature, 2004