Crabs have ten legs, with the first pair modified into claws called chelae.
Crabs are decapod crustaceans and belong to the order Brachyura, which means "short tail." They have a hard exoskeleton, five pairs of legs, and two pairs of antennae. Their legs are specialized for various purposes, such as walking, swimming, and grasping prey. Crabs are found in oceans, freshwater, and even on land, with over 7,000 species known to exist.