Among the spider crabs produced in Japanese waters, one is from the genus Macrobrachium, which is the largest existing crab in the world, with a body width of about 30 cm and the size of the steering wheel of a car. Crab legs can be up to 4 meters long and breastplate is 64 cm wide. 192 1 year, people captured the largest Japanese spider crab (20 12) discovered so far, with a weight of 18.6 kg and a wingspan of 5.8 meters.

The body is spindle-shaped, with sharp ends, prickly carapace, pointed legs and long walking feet. Ten crab claws are long and sharp, and a pair of claws are hard and powerful. All claws can stretch to a diameter of 3 meters. Small fish can't escape when they enter this range.

The orange hairy spider is only 6 inches long. Compared with them, the fully developed Japanese spider crab is definitely a giant. This crab is so big that it can ride like a horse. Japanese spider crabs live in the deep sea. They spend their whole lives in the deep sea, and their life span can reach 100 years. This crab lives in Japanese waters and is the largest arthropod in the world. 192 1 year, people have captured the largest Japanese spider crab ever discovered, weighing 4 1 pound (about 18.6 kg) and reaching 19 feet (about 5.8 meters).