Pelagia noctiluca

This purple jellyfish species is by far the most common in the Mediterranean, having the ability to form huge swarms which can stretch for several square kilometers. The species, commonly known as the mauve stinger, is the source of much anxiety amongst swimmers globally in view of the painful sting it inflicts. It owes its Latin scientific name to the fact that it is capable of glowing in the dark by producing its own light. The species lays its eggs in the Mediterranean in December and young medusae develop after about one month.


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