closeup of pelagia noctiluca which is a jellyfish from the family pelagiidae, also known as mauve stinger or purple-striped jelly

pelagia noctiluca jellyfish mauve stinger mediterranean close up diving sea bottom underwater marine life sealife shallow dangerous dive jelly tentacles medusa beach scuba snorkeling snorkel ecosystem plague swimming blue poisonous nature creature purple undersea biology aquatic species habitat wildlife fauna stinging organism coastal water biodiversity conservation stings no people