Barrel Jellyfish floating offshore in Cornish tranquil coastal waters

jellyfish floating water waters tranquil tranquility relaxing gently barrel barrel jellyfish rhizostoma pulmo dustbinlid frillymouthed scyphomedusa rhizostomatidae atlantic species sea ocean uk scientific marine life summer july coastal inshore stinging tentacles frilly arms large translucent mushroom shaped bell violet fringe britain south west cornwall living seas wildlife thrives gentle giant marine biology mesmerising idyllic carrick roads falmouth spectactular offshore copy space cornish