King crabs are large crustaceans found primarily in the northern Pacific Ocean. They belong to the family Lithodidae and are known for their long legs and hard shells. The most famous species is the red king crab, which can weigh up to 24 pounds and has a leg span of over five feet. King crabs are typically found in deep waters and are popular in commercial fishing. These crabs are omnivorous, feeding on a diet of fish, mollusks, and detritus. They are often harvested for their sweet, tender meat, making them a delicacy in many cuisines. The fishing of king crabs is regulated to ensure sustainable populations.