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Carybdea marsupialis
Stinging

Carybdea marsupialis

Cubozoa (Carybdeidae)

This is the only endemic and common box jellyfish in the Mediterranean Sea. Unlike other Mediterranean jellyfish, it swims very fast and is attracted to artificial lights at night (lighthouses, ports).

Sting symptoms

Very stinging. Painful sting, burning sensation and red whip-like marks. Not life-threatening.

Identification

Small, perfectly transparent umbrella shaped like a cubic thimble. It has 4 distinct tentacles equipped with red or orange rings, located at each corner of the base.
Size
Umbrella: 3 to 5 cm / Tentacles: about 30 cm
Habitat
Sandy coastal waters. Rests on the bottom during the day, swims near the surface at night.
Scientific family

Cubozoa (Carybdeidae)

Community photos

Photos submitted and verified by Meduseo users. (2)

Carybdea marsupialis
03/07/2026 Jesolo
Carybdea marsupialis
14/06/2026

What to do if stung?

Check our first aid guide to know how to react.