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Japanese Spider Crab Research Paper

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Visitors to the Pacific coast of Japan may see a large crab with long legs like a spider. This animal is the Japanese Spider Crab. It is a crab that is a member of the family Inachidae. The Japanese Spider Crab is an unusual animal that is threatened by fishery. Japanese Spider Crabs most often inhabit the sandy and rocky bottom of the continental shelf and slope at an average depth of 150 - 300 meters. They like to inhabit vents and holes in the deeper parts of the ocean. Sometimes, they are even found at 600 meters underwater. They are found most often in the Sagami, Suruga, and Tosa bays. However, the crab has been found in Su-ao, in Eastern Taiwan. At the time of spawning season the …show more content…
Its body can grow up to 16 in and it can weigh up to 19 kilograms. The males have longer pincers (chelipeds) while the females have much shorter pincers, which are shorter than the following pair of legs. Other than its huge appearance, the Japanese Spider Crab is different than other crabs in many ways. The first “ swimming legs ’’ of males seem unusually twisted, and its larvae appear primitive. The Japanese Spider Crab is orange with white spots along the legs. Its walking legs help it in climbing and hooking onto rock, but prevent it from picking up or grasping objects. In adult males the chelipeds are far longer than any of the walking legs, with the right and left chelipeds being of equal size. Females, on the other hand, tend to possess chelipeds that are shorter than the other walking legs. Japanese Spider Crabs are also known for their long spindly

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