According to the query Huinong.com, long-footed crabs and king crabs are not the same.

The long-footed crab, also known as the Yalaska emperor crab, belongs to the anthropomorphic stone crab class, mainly distributed in the cold waters of the northern North American Pacific Ocean and other waters, the Bering Sea and the Japan Sea in the deep sea, its body shape is huge, fat and heavy, the carapace is harder, reddish-black. Long-legged crabs are huge, weighing around 6-26 pounds, with a lot of cream and crisp meat, suitable for steaming and baking, and their shape resembles a spider, with spines on their feet and sweet meat.

The king crab is also called stone crab or rock crab, that is, the stone crab family of crustaceans, is not a real crab, they are mainly distributed in the cold sea, because of its huge size and named, known as the "king of crabs" reputation. King crab belongs to the deep sea crab, survival depth of 850m deep, survival of the water temperature in 2-5 ℃, can survive the lowest water temperature is 1.4 ℃, its body size is huge and delicious meat, loved by people.