Hello, as far as I know, the 800g king crab is not very small. The king crab is huge, with a maximum weight of 10 kilograms. King crabs grow slowly and can live up to 30 years. From the appearance, the king crab is about 25 centimeters wide and has a leg length of about 1 meter. It is the largest crustacean. The whole body is covered with hard thorns. The legs of the king crab are long and thick, with three pairs of legs visible except for one pair of claws. The left chela is slightly larger than the right one. In addition, most crabs commonly seen move laterally. King crabs can move not only laterally but also vertically. King crabs, also known as stone crabs or rock crabs, are crustaceans of the Stone Crab family. They are not true crabs. They are mainly distributed in cold seas.

It is named because of its huge size and is known as the "King of Crabs". I hope my answer will be helpful to you