The Family Lithodidae is commonly known as the king crab family, due to the large size of its members. The group also includes synonyms such as the stone crab family and the spider crab family. This family of crustaceans is found in the cold waters of the Pacific, Atlantic, and Southern Oceans. The king crabs are often sought after as a delicacy in many cultures, and their commercial fishing has led to some species being endangered. The Family Lithodidae includes 16 genera and over 60 species, all of which have unique characteristics and adaptations that make them fascinating creatures to study.