Usually large and slightly flattened, the carapace has an uneven surface that is covered in tiny spines or tubercles. It usually takes the shape of an oval. The legs and carapace are typically colored to blend in with the seafloor; these colors are typically variations of brown, reddish, or gray. Protruding from the front of the carapace, the well-developed rostrum is frequently embellished with projections resembling beaks or spines. The chelae, or claws, are the first pair of the crab’s five pairs of legs. Moving on the sea floor is made easier by the long, slender remaining walking legs. The chelae can be asymmetrical, with one claw being larger than the other, and are often strong. For grasping and handling food, they have granular textures or spines. Since the eyes are on stalks, they have a broad field of vision. Typically, the stalks are sturdy and somewhat short. Usually lengthy and sensitive, the antennae help in the sensing of changes in the environment and food. The entire body, including the legs and carapace, may have rough surfaces covered in spines or tubercles, which serve as an excellent form of camouflage and predator defense.