The nail width can reach 60 cm, and the foot span is 1.5 meters.

The average weight of a seven-pound king crab is 2 to 5 kilograms. It takes about ten years to grow to weigh seven or eight kilograms. It is the heaviest crab in the world, weighing up to 36 kilograms, and its armor is as wide as It reaches 60 centimeters, has a foot span of 1.5 meters, and is fat and heavy.

King crabs, also known as stone crabs or rock crabs, are crustaceans of the Stone Crab family. They are not real crabs. They are mainly distributed in cold seas. It is named because of its huge size and is known as the king of crabs. King crabs are deep-sea crabs that live at a depth of 850 meters and the water temperature is 2-5°C. The lowest water temperature that king crabs can survive is 1.4 degrees Celsius.