The brittle star or Ophiuroidea is in the class of Echinodermata and is closely related to starfish. The brittle star appears like it is covered in hair when it actually has small spines that encase it for protection. The starfish as well as the brittle spine posses and extraordinary ability to regenerate limbs. The brittle star either from an accident or predator can break off and regenerate limbs on itself. The brittle star also crawls with its "legs" across the ocean floor using its muscular system. The brittle star can hang upside down using muscles on the bottom of its "legs".