Lithodidae, commonly known as king crabs, are a family of crustaceans found primarily in cold marine environments. They are characterized by their large size, robust bodies, and long legs. King crabs are notable for their economic importance, as they are a popular seafood choice in many regions, particularly in Alaska and Japan. These crabs typically inhabit the ocean floor, often in deep waters, and are known for their scavenging behavior. Lithodidae species have a varied diet, feeding on mollusks, fish, and detritus. Their unique adaptations allow them to thrive in harsh conditions, making them a fascinating subject of study in marine biology.