A chela is the claw of what type animal?

A chela is the claw or pincer of a crustacean, such as a crab, lobster, or shrimp. It is a hardened, movable part of the exoskeleton that is used for grasping, capturing, and manipulating food, as well as for defense against predators. Chelae are typically found on the front of the crustacean's body and are formed from modified appendages.