Pistol Shrimp
Pistol shrimp is capable of producing a sound reaching 218 decibels, which is louder than a gunshot and capable of breaking glass jars, hence making it difficult to keep it in aquariums.
Snapping shrimp have the ability to reverse claws. If they lose the snapping claw, the missing limb regenerates into a smaller claw and the original smaller appendage grows into a new snapping claw.
The snapping action of the claw creates a cavitation bubble that reaches speeds up to 62 miles an hour (100 km/hr.) and collapses with a loud snap.
The snap of the bubble also produces something called sonoluminescence, i.e., emission of short bursts of light. When the cavitation bubble collapses it reaches temperatures of over 5000 Kelvin and produces a flash of light which lasts for no longer than 10 nanoseconds and is not visible to the naked eye.
Pistol shrimps have the ability to form a symbiotic relationship with some species of goby fish. Pistol shrimp shares its burrow with the goby and provides it with food. In exchange goby, which has much better eyesight, warns the shrimp when danger approaches. The shrimp keeps in contact with goby through its antennae and the goby alerts the shrimp by its characteristic tail movements and then both retreat into the safety of the shared burrow.
