cotylorhiza tuberculata or cassiopea mediterranea beached on the beach of the adriatic sea in italy

adriatic animal animals beams beautiful blue bright coast colour cotylorhiza danger dangerous dark deep depth diving documentary europe fear fish fluo fluorescent fried full harmful harmless head horizontal hurt image in jelly jellyfish length mediterranean medusa nature ocean sea sealife tentacles the themes tuberculata undersea underwater venom venomous water wild wildlife yellow