Kamchatka stone crab

Kamchatka stone crab (Paralithodes camtschaticus), also known as Hokkaido king crab, Alaska king crab, cod farm crab, northern king crab, belongs to a species of Paralithozoidae. Like the short-legged stone crab, Kamchatka stone crab is not a crab. , but a relative of the hermit crab, it only has eight legs instead of ten, and the other two legs have degenerated and shrank into the shell. Because its meat is very delicious and its appearance is very similar to crabs, it has become an important commercially caught crab species. This species is distributed in the cold water waters of the North Pacific from the Sea of Japan, Sea of Okhotsk to the Bering Sea.

King crab is a very large crab species, with a shell width of up to 28 centimeters and a length of 1.8 meters when its legs are fully extended.

In recent years, the excessive growth of the king crab population in the Barents Sea has caused ecologists to pay attention to the local ecosystem. King crab was introduced to the area by the Soviet Union in the 1960s to provide local fishermen with a new catch species. The current local distribution of king crabs is spreading along the coast of Norway towards Svalbard. In July 2014, blue king crabs were caught in the port city of Nome, Alaska, USA. The reason why they turned blue is unknown.

King crabs usually live in polar deep seas at temperatures of 3 to 5 degrees Celsius, and are currently overrun. They have almost no natural enemies. Even humans, who are considered the natural enemies of all living things, cannot effectively control their numbers because catching king crabs is very difficult. Of course, the price is not cheap. King crab fishing can be said to be the most dangerous occupation in the world. Although the salary is high, few people are willing to risk their lives to engage in this occupation.

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