Home›Echinoderms›Sea Stars (Asteroidea)›All Sea Stars (Asteroidea)Browse ByAll Sea Stars (Asteroidea)Sea stars, also called true starfish, make up the echinoderm class Asteroidea. Unlike the superficially similar brittle stars, they show no sharp demarcation between the arms and the central body, and they move using tube feet rather than by wriggling their arms. True starfish and brittle stars shared a common ancestor in the Ordovician. Most sea stars are predators that feed on sessile or slow-moving prey such as mollusks and barnacles, and many can turn part of the stomach out through the mouth to digest food outside the body. The crown-of-thorns starfish, Acanthaster, specializes on corals and can do considerable damage to reefs.All Sea Stars (Asteroidea)SourcesComments (0)Reader Challenges (0)All Sea Stars (Asteroidea)Filter Results7 entriesCommon GroupAllSea Stars (Asteroidea) (7)TaxonomyAllAsteroidea (7)HabitatAllCoral Reef (2)Intertidal Zone (3)Marine (2)Conservation StatusAllCritically Endangered (1)Not Evaluated (5)EcosystemAllCoral Reef Systems (2)Great Barrier Reef (1)Kelp Forests (1)Raja Ampat (1)Everyday GroupAllSea Stars (Asteroidea) (7)DietAllCarnivore (7)System (Realm)AllMarine (7)Relationship to PeopleAllAgricultural or Structural Pest (1)Ecotourism and Research (1)Hunted or Fished (2)Kept as Pets (1)Venomous or Dangerous to Humans (1)Living or ExtinctAllYes (2)Where It LivesAllAustralia (1)Belgium (2)Canada (3)Central America (1)Denmark (2)France (2)Ireland (2)Kenya (1)Mauritius (1)Mexico (2)Morocco (2)Netherlands (2)Norway (4)Palau (2)Panama (1)Papua New Guinea (1)Portugal (2)Seychelles (1)Spain (1)Sweden (2)Turkey (2)United Kingdom (2)United States (4)West Africa (2)Show ResultsBrowseCompareSelect all 7Asterias RubensEchinodermsChocolate Chip Sea StarEchinodermsCommon StarfishEchinodermsCrown-of-thorns Starfish (Acanthaster planci)EchinodermsCushion StarEchinodermsOchre Sea StarEchinodermsSunflower Sea StarEchinodermsSourcesUC Museum of Paleontology: Introduction to the AsteroideaUC Museum of PaleontologyIntroduction to the AsteroideaQuote, Introduction to the AsteroideaTrue starfish are classified in the AsteroideaView the SourceCrown-of-thorns starfish (Wikipedia)Has Member: Crown-of-thorns Starfish (Acanthaster planci), LeadQuote, Has Member: Crown-of-thorns Starfish (Acanthaster planci), LeadThe crown-of-thorns starfish (Acanthaster planci) is a large starfish that preys upon hard coral polyps.View the SourceSunflower sea star (Wikipedia)Has Member: Sunflower Sea Star, LeadQuote, Has Member: Sunflower Sea Star, LeadPycnopodia helianthoides, commonly known as the sunflower sea star, is a large sea star found in the northeastern Pacific Ocean.View the SourceWikipedia: Common starfishHas Member: Common Starfish, LeadThe common starfish, common sea star or sugar starfish (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic.Has Member: Asterias Rubens, LeadThe common starfish, common sea star or sugar starfish (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic.View the SourceWikipedia: Protoreaster nodosustier 2WikipediaHas Member: Chocolate Chip Sea Star, LeadQuote, Has Member: Chocolate Chip Sea Star, LeadProtoreaster nodosus, commonly known as the horned starfish or chocolate chip starfish, is a species of sea star found in the warm, shallow waters of the Indo-Pacific region.View the SourceWikipedia: Culcita novaeguineaetier 2WikipediaHas Member: Cushion Star, LeadQuote, Has Member: Cushion Star, LeadCulcita novaeguineae (common name, cushion star) is a species of starfish.View the SourceWikipedia: Pisaster ochraceusHas Member: Ochre Sea Star, LeadQuote, Has Member: Ochre Sea Star, LeadPisaster ochraceus, generally known as the purple sea star, ochre sea star, or ochre starfish, is a common seastar found among the waters of the Pacific Ocean.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.