a lettuce sea slug (elysia crispata) in cozumel

wildlife invertebrate animal fish leaf underwater nature reef food coral soil rock flower green water organism lettuce sea slug elysia crispata cozumel mexico aquatic beautiful bonaire camouflage caribbean close closeup florida keys hard invertebrates isla mujeres life little macro marine natural people nudibranch ocean floor outdoor outdoors saltwater slugs single soft tropical undersea animals