South American Multiradiate Sun Star

Heliaster helianthus, the sun star, is a species of Asteroidea (starfish) in the family Heliasteridae. It is found in shallow water rocky habitats and in the kelp forests off the Pacific coast of Ecuador, Peru and Chile. Description Heliaster helianthus is a multi-armed starfish, the number of arms usually being in the range 28 to 39, and the diameter typically being between 16 and 20 cm (6 and 8 in).

Heliaster est un genre d'étoiles de mer de la famille des Heliasteridae. On les rencontre dans l'océan Pacifique oriental. Liste des espèces Selon World Register of Marine Species (21 octobre 2013) : Heliaster canopus Perrier, 1875 -- Pacifique sud-est Heliaster cumingi (Gray, 1840) -- Galapagos Heliaster helianthus (Lamarck, 1816) -- Pacifique sud-est Heliaster kubiniji Xantus, 1860 -- Golfe de Californie Heliaster microbrachius Xantus, 1860 -- Pacifique est Heliaster polybrachius H.

Los equinodermos (Echinodermata, del griego. ekhino, «púa» y derma, «piel») son un filo de animales deuteróstomos exclusivamente marinos y bentónicos. Su nombre alude a su exclusivo esqueleto externo formado por osículos calcáreos.