Crab molting is the process where a crab sheds its old, hard exoskeleton so it can grow. Since crabs can’t stretch their shells, they have to break free from the old one and form a new, larger one. Here’s how it works: •Preparation: Before molting, a crab reabsorbs calcium from its old shell and forms a soft new shell underneath. They also stop eating and often hide to stay safe. •The Molt: The crab splits its old shell (usually along the back) and wriggles out. This can take hours and leaves th