rhopilema nomadica jellyfish at the mediterranean seacoast

rhopilema nomadica jellyfish mediterranean seacoast vermicular filaments venomous stinging cells can cause painful beach bell burn cell coast coastal danger illustrative editorial image injury israel jelly isolated season marine sea meduza pain photo nomadic risk roam sand scorch scyphozoa shore seashore seaside sting stock summer sun surface swim tentacles touch toxin vacation vertebrate water wave injuries people