1, different species: Alaska crab belongs to the Alaska emperor crab, king crab belongs to the Kamchatka anemone crab. 2, Alaska crab is mainly distributed in the cold waters of the North Pacific Ocean, from the Sea of Japan, the Sea of Okhotsk to the Bering Sea; and the king crab is mainly distributed in the cold waters. 3, different breeding methods: Alaska crab breeding season in the late winter or early spring, the female and male king crab mating and incubation; and king crab generally spawn from April to June every year about 350 meters away from the shallows. The female and male king crabs mate and then hatch; while the king crab generally spawns in the shallows at a distance of about 350 meters from April to June every year.

The Alaskan crab is known as the "king of crabs" because of its large size. Grown mainly in cold, deep-sea waters, the crab is green and pollution-free, and its meat is large, fat and highly prized by people, with an unparalleled slightly sweet flavor and rich, delicate meat.

The Alaskan king crab is a very large crab species with an average weight of 10 kilograms and an average length of 220 millimeters. The shell can be up to 28 centimeters wide, and the legs can reach 1.8 meters when fully spread.

The king crab, also known as the stone crab or rock crab, is a crustacean of the stone crab family and is not a true crab. Because of their large size and delicious meat, king crabs are widely caught for food by many species, the most common being the Kamchatka stone crab.