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Reticulated Seastar (Starfish) on beach with water behind it. Oreaster reticulatus is common Caribbean sea star (starfish) that eats sponges. Photographed on the beach of Grenada Oreaster reticulatus is a member of the family Oreasteridae. It was once the most common seastar in the shallow waters of the Caribbean . The cushioned star is large with a central disc surrounded by five short, tapered arms. The thick body of O. reticulatus is covered by a hard shell with raised knobby spines. The color of adult cushioned stars can be brown, orange, red, or yellow. Classification Kingdom: Animalia Phylum/Division: Echinodermata Class: Asteroidea Order: Valvatida Family: Oreasteridae Genus: Oreaster Species: Oreaster reticulatus