There are many species of sea star colloquially called a "cushion sea star" or simply "cushion star." Some of these are listed here, under the highest taxonomic classification where they are referred to as such.
Families Odontasteridae (Verrill, 1880) Acodontaster conspicuus (Koehler, 1920) Odontaster validus (Koehler, 1906)
Genera Culcita (Agassiz, 1836) Culcita coriacea (Müller & Troschel, 1842) Culcita novaeguineae (Müller & Troschel, 1842) Culcita schmideliana (Retzius, 1805) Ceramaster (Verrill, 1899) Ceramaster arcticus (Verrill, 1909) Ceramaster patagonicus (Sladen, 1889)
Species Choriaster granulatus (Lütken, 1869) Meridiastra calcar (Lamarck, 1816) Asterina gibbosa (Pennant, 1777) Oreaster reticulatus (Linnaeus, 1758)