Purple Starfish regenerate single arm, Echinaster sepositus, Vis Island, Mediterranean Sea, Croatia

purple starfish echinaster sepositus vis island mediterranean sea croatia sea star seastar starfish asteroidea echinoderms marine invertebrates asterias orange behavior regenerate comet regrowing vis adriatic sea dalmatia split dalmatia europe geography nature sea ocean sealife underwater rm no people one animal full length side view horizontal