black sea fauna. aurelia aurita moon jelly, moon jellyfish, common jellyfish, or saucer jelly

and anemone anemons animal aqua aquatic aurelia aurita bay benthos biological biology black cnidaria common ecological ecology environment europe fauna flora invertebrate jelly jellyfish life mammal marine mediterranean medusa meduza moon nature odessa organisms saucer sea seahorse seaside swim under undersea underwater water wild wildlife world