barrel jellyfishes, the dustbin-lid jellyfish or the frilly-mouthed jellyfish is a scyphomedusa in the family rhizostomatidae

animal aquarium aquatic barrel beautiful blue cnidarian coast colorful creature deep dive dustbinlid family fauna fish france freshwater frillymouthed jelly jellyfish jellyfishes life marine mediterranean medusa natural nature ocean pulmo rhizostoma rhizostomatidae rock saltwater scuba scyphomedusa sea surface swim tentacle translucent undersea underwater water white wild wildlife