mediterranean purple starfish - ophidiaster ophidianus

color stella serpente marine biology texture bright undersea world life beautiful red starfish sea star fish animals freshwater saltwater snorkeling underwater biodiversity european coloured aquarium aquatic stars ophidiaster ophidianus six arms portugal dive big fauna inverts spotted aqua natural scuba water background animal spain greece ionic invertebrate azores purple ocean blue atlantic regeneration echinoderm wild invertebrates seastar aquaculture tropical mediterranean lichonos nature parga mariculture wildlife arm environment organism shape living diving asteroidea ophidiasteridae species east gulf guinea