First of all, the king crab

King crab, also known as stone crab or rock crab, is a crustacean of stone crab. It is not a real crab, but mainly distributed in cold sea areas. Named after its huge size, it is known as the "king of crabs". It is not the same kind of crab as king crab (giant paramecium crab), so please don't confuse it. Because of its huge size and delicious meat, many species are widely caught as food, the most common of which is Kamchatka stone crab. King crabs belong to deep-sea crabs, with a survival depth of 850 meters and a survival water temperature of 2-5℃. The lowest water temperature that King Crab can survive is 1.4 degrees Celsius. 20 1 1 In September, scientists discovered 1 tens of thousands of giant king crabs in the mud bed basin 850 meters below the Antarctic continental shelf. Scientists say that the appearance of this strange large carnivore may be the first sign of ecological disaster in Antarctic waters.

Second, biological reproduction.

1. The reproduction speed of king crabs is amazing, and each female crab can produce nearly 10,000 live crabs every year.

2. King crabs usually lay eggs in a shoal about 350 meters from April to June every year. Most of these creatures live in shallow mud and sand and inhabit low-latitude waters.

3. In the breeding season, the female king crab and the male king crab hatch after mating. Generally speaking, in the life span of about 30 years, the fertility of king crabs is often 4 years.

4. The hatching rate of eggs is about 16000/80000.