Crab

Crabs are found only in an undersea crab pen located in a Mogre Camp off of Port Khazard and in the Dragontooth Shipwreck off the coast of Dragontooth Island.

Crabs can be killed for crab meat, which is an ingredient of cooked fishcake. They occasionally drop a fresh crab claw or fresh crab shell, which can be crafted into a crab claw glove and crab helmet, respectively.

The mogre camp area becomes available after beginning the Pirate Pete portion of the Recipe for Disaster quest. Players need to speak to Murphy in Port Khazard and have him fashion a fishbowl (supplied by the player) into a fishbowl helmet and diving apparatus, after which he assists them to travel to the bottom of the sea. The Dragontooth Shipwreck requires reaching a certain point in the Rocking Out quest, and also requires wielding the necessary diving gear.

Trivia
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 * Despite being located underwater, crabs are weak to Fire spells.