“A smasher mantis shrimp’s punch has the same acceleration as a 22-caliber bullet, delivering a blow of 15,000 newtons, a force equal to more than 2,500 times the shrimp’s weight”
And in doing so with that speed, it creates a little air pocket bubble thingy that heats up to near the surface temperature of the sun.
Getting hit by one is extremely painful.
“A shrimp can land before a person even realizes it is there because its strike is so quick. Shrimp punches cause deep wounds and lacerations with rounded edges. There is almost always a loss of tissue after a mantis strike and heavy bleeding.”