Brittle stars are part of the phylum Echinodermata and belong to the class Ophiuroidea, closely related to starfish. They crawl on the bottom of the ocean floor by using their flexible arms for locomotion. They quickly wiggle their highly flexible arms which help them to propel forward. During their movement, the central disc is elevated and the tube feet help grip the substrate by friction since they don’t have suckers. They move with one or two arms leading and the next pair moving synchronously in a rowing motion with the remaining arms trailing behind it.