King crab, also known as stone crab and rock crab, is a crustacean, belonging to the family Stone Crab, not a real crab. Named after its huge size, it is known as the "king of crabs". The dark red or dark brown shell is an oblique round body, and the whole body is covered with hard thorns. Mainly distributed in cold deep-sea waters, the survival depth is 850m, the survival water temperature is 2-5℃, and the lowest surviving water temperature is 65438 0.4℃.

Function introduction

A real crab has four pairs of feet and a pair of crab claws, and the joints of the feet are bent forward. The king crab only has three feet and a pair of crab claws. Their feet bend back. Average body weight 10 kg, average body length 220 mm, shell width up to 28 cm, feet fully extended to1.8 m. Because of its strong long legs, it can crawl horizontally and walk vertically.

Feeding on phytoplankton, benthos, etc. The breeding speed of king crab is amazing. Each female crab can produce nearly ten thousand live crabs every year. King crabs usually lay eggs in shoals about 350 meters away from April to June every year. Females mate once a year, while males may mate many times a year in spring. Generally speaking, in a king crab's life span of about 30 years, the growth period is 4 years.