Hammerclaw Crab (5e Creature)
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Gargantuan monstrosity, neutral
Amphibious. The crab can breathe air and water.
Siege Monster. The crab deals double damage to objects and structures.
Multiattack. The crab makes two attacks with its claws.
Claw. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 34 (6d8 + 7) bludgeoning damage, and the target is grappled (escape DC 22). Until this grapple ends, the target is also restrained. The crab has two claws, each of which can grapple only one target.
Truly vast crustaceans, hammerclaw crabs have vast claws that they use to hunt almost anything, from whales to ships, tearing them to pieces and devouring what they can, before scurrying off. They sometimes attack coastal settlements, especially if they feel that they are intruding on their territory or if ships are getting too close to their nests. Few ships sail when hammerclaw crabs breed, as a mother hammerclaw crab is extremely protective of her young, attacking anything without warning that draws too near for her liking.