Brittlestar is a term used to describe a type of marine animal that belongs to the class of echinoderms. These sea creatures have arms that are fragile and easily breakable, which is why they are called brittle stars. However, there are other terms often used to refer to brittlestars. These include "serpent stars" due to their snake-like way of moving, "basket stars" because of their intricate basket-like patterns, and "snake stars" because of their elongated arms. Other similar terms for brittlestars are "crinoids," "ophiuroids," and "echinasterids," depending on their specific classification. Regardless of the name used, these fascinating marine animals continue to intrigue scientists and enthusiasts alike.