chesapeake bay jellyfish, 3 species seanettles, chrysaora quinquecirrha, moonfish , aurelia aurita, lionsmane, cyanea capillata. ,

purple invertebrate organ blue organism petal circle animal jellyfish coral underwater violet font flower azure sea jellies common names medusa-phase gelatinous members subphylum medusozoa major phylum cnidaria free-swimming marine animals umbrella-shaped bells trailing tentacles bell pulsate provide propulsion highly efficient locomotion armed stinging cells capture prey defend predators complex life cycle medusa sexual phase planula larvae disperse sedentary polyp phase maturity