1, different varieties:

King crab, also known as stone crab or rock crab, that is, crustaceans of the family Lithopodae, is not really a crab, but belongs to the family Lithopoda. Emperor crab refers to the giant quasi-shore crab, which belongs to the fan crab family of Decapoda and Short Tail.

2. Different shapes:

Emperor crab has four pairs of feet and a pair of crab pliers, and the joints of the feet are bent forward. King crabs only have three pairs of feet and a pair of crab claws. The larger crab claws are called "killer" and the smaller one is called "feeder". Their feet are bent backwards.

Emperor crab is an enlarged crab. From the appearance, Emperor crab is very big, especially the male crab, which has a claw as big as his body. King crab is named after its huge size, and is known as the "king of crabs". It looks more like spiders than crabs.

3, different distribution:

King crabs live in cold water, mainly distributed in the south and north of Sakhalin Islands in Russia. Kamchatka region; Far East Sea; Exploration of coastal areas such as forest outburst; The fishing season is from May to1February. Russian live and fresh products are generally transported to China in the form of water trucks, while frozen products often appear in the form of cooked or raw frozen king crab legs in China market.