Pelagia noctiluca (small red line bottom left points to one), a typical Mediterranean jellyfish.
This one was seen – along with a few buddies in Menton, south France. These jellies are an irregular late summer nuisance and quite visible. Their stings are unpleasant but not fatal. If you are concerned check lifeguard flags or even better find the lifeguard hut as potential or actual jelly information will be displayed there (in France anyway, we can’t say about Italy or Spain but we would assume something similar). See below for jelly information.
Avoiding Jellyfish Stings
Take special precautions if you have a heart condition as jellyfish deaths are normally attributed to cardiac arrest or pulmonary congestion.
Avoid swimming off northern Australia’s beaches in the October-May high-jelly season, especially in the seas north of Brisbane in Northern Australia, but also around India, Indonesia and the Philippines. Wetsuits or Lycra ‘stinger suits ‘ offer good though not complete protection.
Dead jellyfish on beaches may look like gelatinous blobs, but while there is still moisture there can be life in the cells and you may be stung. Don’t tread on them and don’t pick them up.
Australia’s Stingers get zapped
Getting wacked by a jellies off popular NE coast resorts of Cairns and Airlie beach is a dying custom as both towns have constructed such spectacular, user-friendly, free salt water lagoons on the shore that no longer does one feel the need to brave the turgid, toxic waters of the sea. Brisbane also has a terrific lagoon on a city river bank.