Although coconut crab is a marine animal, it can live on land for a long time. It has a hard shell, and there are many blood vessels on the inner wall of gill cavity, which can help breathing, so it can adapt to land life and return to the ocean to lay eggs in the breeding season.

Coconut crab is an arthropod, also known as gossip crab. Coconut crab's head and chest are round, protruding forward, and part of its abdomen is folded to the ventral side of its head and chest; The feet are stout, and the left claw is slightly larger than the right claw. Coconut crabs can break open coconut shells with pliers and eat coconut pulp, hence the name.

Living habits of coconut crabs

Coconut crabs do not run like crabs. They can walk in a straight line. This is because in the young crab period, it will carry a protective snail shell on its back, and its feet are mostly used to support the inner wall in the snail body, so its forelimbs have to crawl, so it can walk in a straight line. Even if the snail shell is abandoned as an adult, it will not run like a crab due to the change of body structure, and the habit of walking straight remains.

Coconut crabs are omnivores. Coconut crabs feed on carrion and fruit. It often climbs to the coconut tree to pick coconuts to eat. People use this feature to train it to help people pick coconuts. Coconut crabs have the habit of moving things to do activities at night. During the day, what people forget on picnics on the beach is dragged away by them. Coconut is one of their favorite foods. Its strong legs make it easy to climb the coconut tree and pick it up.

Coconut shells are hard. In order to eat the juice and pulp inside, the coconut crab will insert the crab claws into the coconut shell from the germination hole of the coconut, and then pry open the coconut shell bit by bit. Coconut crabs can not only climb trees, peel coconuts with their claws, but also break coconuts with their claws when eating.