The Crab is one of the simplest animals in the game, and is pretty small. Its tail is not directly visible. Its base color is red, and its only characteristic is its image-only side clamps, and without images, it actually walks forwards. It gains a new appearance when hiding inside its shell. When in the shell, it is covered by a triangle-like cover, which is a light shade of red. A little bit of the head and claws stick out when inside the shell.
When on land, players can hold the "W" button to enter their shells, which decreases health and XP loss by 70%, and speed by 50%. The same can be done using the Turtle, get into a lake or the ocean to not have the shell.