Crabs

Crabs can range in size from a few millimeters wide to the Japanese Spider Crab, which has a leg span of up to 13 feet. Most crabs display sexual dimorphism, which means you can usually tell a male crab from a female because males tend to have larger claws, or one claw that is enlarged for attracting a mate.

Habitat

Crabs are found in all of the world’s oceans, as well as in freshwater and on land.

Diet

Crabs have a variety of prey, including algae, worms, other crustaceans, snails, mussels, etc.

Predators

Crabs have many natural predators, including birds, fish, seals, some terrestrial mammals such as raccoons, etc. Crabs are also a food source for humans, as they make up 20% of all marine crustaceans caught, farmed or consumed.