The European Spider Crab, also known as the Maja Squinado, has several synonyms that are used interchangeably in various parts of the world. Some of the commonly used synonyms for this crab include the spiny spider crab, the giant spider crab, the spiny spider, the king crab, the sea spider, and the long-legged spider crab. These crabs are well-known for their long legs and spiny exoskeleton that helps them blend into their habitat while providing defense against predators. They are primarily found in the Atlantic Ocean and the Mediterranean Sea and are often caught for their meat, which is considered a delicacy in some parts of the world.