Giant jellyfish spotted in the Adriatic for first time since Second World War

A giant, fuchsia-pink jellyfish has been spotted in the Adriatic Sea for the first time in 70 years.

The Drymonema dalmatinum, which can grow to more than three feet in diameter, was photographed by amateur divers off the northern coast of Italy.

It is one of the rarest jellyfish to occur in the Mediterranean and had not been documented in the Adriatic since 1945.

The bizarre but beautiful creature derives its Latin name from the fact that it was first discovered off the coast of Dalmatia in the 1880s by a German naturalist, Ernst Haeckel.

It was observed on a few occasions after that but sightings dried up at the end of the Second World War, only for the species to emerge again now.

Little is known about the jellyfish – marine biologists do not even know how powerful its sting is. Nor are they sure whether the species’ sudden re-emergence in the Adriatic is linked to the effects of global warming.

Experts say that jellyfish such as Drymonema dalmatinum have two distinct phases in their lives – an early phase when they are bottom-dwelling polyps, and a secondary phase in which they coalesce into floating jellyfish.

It may be that this particular species spends decades living at the bottom of the sea before evolving into a fully-formed jellyfish and that its reappearance has nothing to do with warmer seas.

“The polips are normally small and can live for a long time,” said Ferdinando Boero, from Salento University in Puglia, one of Italy’s foremost experts on jellyfish.

“Every now and then they produce jellyfish. Some species remain small, others become much bigger,” he told La Stampa newspaper.

Source: The Telegraph

TF&G Staff

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