smooth brittle star - ophioderma longicauda

animals biology animal kingdom natural world outdoor outdoors zoology ocean life italy snorkel beach snorkelling long macro scene closeup oceanographic oceanographer brittle-star undersea brown brittle star bottom nature serpent strait underwater bottom dwellers sea undersea blanes echinodermata saltwater snorkeling underwater ophiura seafood biodiversity stars environment fish ophiuroids fragility echinoderms fauna color summer brittlestars inverts seawater tentacles sea water ophiuroid arms brittle creature seastar aqua wild aquatic mediterranean wildlife marine marine echinoderm animal ocean snorkeling scuba starfish dive ophioderma longicauda ophioderma ophiuroidea invertebrates tidal shallow europe invertebrate colorful seas