jellyfish in the center of the image, a pelagia noctiluca, also known as mauve stingers or purple striped jellyfish, floating

jellyfish pelagia noctiluca mauve stinger marine life underwater background sealife mediterranean blue diving people sea sting turquoise dangerous dive medusa undersea tentacles plague jelly backdrop beach scuba snorkeling floating danger tentacle snorkel ecosystem swimming poisonous nature purple biology aquatic wildlife fauna stinging coastal water animal swim