Island Crab

The Island Crab is a giant crab seen in the episode "Family Fishing Trip". From above, it looks like an island.

Appearance
The crab is very large, larger than a boat, with four pairs of limbs. It has two red stalked eyes, with a small mouth. Its dark blue shell is covered with grass and blue rose-like flowers. It also possesses a pair of giant claws, teeming with moss.

Trivia

 * The crab could be a direct reference to Tamatoa featured in the Disney movie "Moana".