Weird sea creatures: The Japanese Spider Crab. "(Macrocheira kaempferi), is a very leggy deep-sea arthropod, and it’s the largest known arthropod. The Japanese spider crab shown—nicknamed Crabzilla. nope that is a nope crab it is called the nope crab
Cymbacephalus Beauforti - the "crocodile fish", a mottled brownish gray species of flatfish with fluorescent green markings cris-crossing its body. They often camouflage themselves on sheltered or semi-exposed reefs.
The Coconut Crab has become extinct in may areas where people live. The Coconut Crab is the only species of the genus Birgus and is related to the terrestrial hermit crabs of the genus Coenobita ~ [Wikipedia]