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Alpheidae
Snapping Shrimp are a family of small crustaceans. They measure only about 1-2 In (3-5 Cm) and vary in color. Snapping Shrimp are known for their ability to make loud booming sounds with their asymmetrical claws. The claw has a pocket in the lower joint. Just above it is a hammer. When the claw is opened, water fills the empty pocket. The claw then snaps shut, and the hammer slides into the pocket. The water inside is forced out at high speed and pressure causing cavitation bubbles and sound waves as loud as 210+ Db, which is far louder than a rocket taking off. At close range this can kill a small fish, damage hearing or even shatter glass.
Snapping shrimp live in tropical reefs across the world. Many species display a symbiotic relationship with gobies. The Snapping Shrimp builds and maintains a burrow for both animals to live in. However, due to the shrimp’s poor eyesight, he cannot spot predators easily. That’s where the goby comes in. The goby spends most of his time guarding the burrow. If a predator is spotted, the Goby warns the shrimp and they both swim into the burrow. If they are cornered, the shrimp uses its claw as a defense. Other species live in large colonies of up to over a hundred members. All of the members are ruled by and possibly the offspring of a single female. The shrimp hunt by ambush. They sit in wait for prey, detecting motion with their long antennae. When ripples are felt it triggers its claw. Snapping Shrimp feed on small crustaceans or fish.
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