Brittle stars are echinoderms, commonly known for their slender and fragile arms that can break off easily when agitated or attacked. They are also known as serpent stars, as they are snake-like in appearance with their arms wriggling across the ocean floor. Other synonyms for brittle stars include ophiuroids, basket stars, and brittle baskets. Ophiuroids, deriving from the Greek word "ophis" meaning snake, is another term for this type of echinoderm. Basket stars, on the other hand, is a term used to describe brittle stars with very long arms that can reach up to one meter in length. Lastly, brittle baskets refer to a particular type of brittle star that has complex branching arms that make it look like a basket.