1, price and supply: due to the limitations of the living environment of the king crab and the difficulty of fishing, the price of the king crab is higher. The market price of king crab is about 400 yuan to 600 yuan per catty. With a limited number of king crabs and relatively scarce supply, king crabs are often in short supply in the market and are more expensive. The price of long-footed crabs is relatively low. The market price of long-footed crabs is about $200 to $300 per catty. Long-footed crabs are relatively abundant in supply, widely distributed and easy to catch. The price of long-footed crabs is relatively stable and relatively easy to obtain in the market.

2, living environment: king crabs mainly live in the Arctic waters, including the Arctic Ocean, the Bering Sea, the Barents Sea and other places. Some of these areas have low water temperatures, high salinity and long freezing times, which are suitable for the survival of king crabs. It is active in deeper water on the seafloor and likes to dig holes in the sand and mud on the seafloor to hide from natural enemies. Long-footed crabs are more widely distributed and can be found in the North Pacific, Atlantic and Indian Oceans. Inhabiting sandy or rocky seabeds in shallow waters, they can also live in freshwater areas of estuaries and rivers. Compared to king crabs, long-footed crabs are more adaptable to living environments and can adapt to different water temperatures and salinity conditions.