This large Barrell Jellyfish was spotted off a boat at Club de Mar, Palma. | Ian Insull


A reader sent in these fabulous photos today after sighting a large barrel jellyfish at Club de Mar. (Palma)

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The Rhizostoma luteum, commonly known as the barrel jellyfish, can measure up to 60cm indiameter and have a total length of up to 2 metres.

Rhizostoma luteum

They are one of the largest jellyfish to swim in the Mediterranean Sea, but can be found in the East Atlantic and North Sea.