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The mauve stinger jellyfish

Mark Thomas

Mauve stinger

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Enw gwyddonol: Pelagia noctiluca
This species can pack a powerful sting, so be sure not to get too close!

Top facts

Stats

Up to 10cm across, thin tentacles up to 3m long

Conservation status

Common

Pryd i'w gweld

July to October, dependent on weather and ocean currents

Ynghylch

The mauve stinger is a small jellyfish, but it certainly packs a powerful punch, with long tentacles and warty structures on its ‘bell’ full of stinging cells. Small crustaceans known as amphipods hang out inside the ring of tentacles and are able to survive unharmed. The mauve stinger likes to feed on other small jellyfish and oceanic sea squirts, also known as ascidians.

What to look for

This jellyfish usually appears a bluey purple (mauve) colour with a globe shaped umbrella covered in orangey brown warts. Long, thin tentacles hang down from around the bell, reaching a maximum of 3 metres.

Where to find

Fairly uncommon close to UK shores, but may be found offshore and in warmer European waters such as the Mediterranean.

Roeddech chi yn gwybod?

As its scientific name suggests, this jellyfish can glow brightly at night if disturbed!