She emphasizes that there are both burning and non-burning variants and that it is difficult to see the difference between them.
The discovery was made by staff at the Öresund Aquarium in Helsingør, who about a week ago caught jellyfish to display in the aquarium. The clinging jellyfish was stuck to a jellyfish and came along with the catch.
The species is only one to three centimeters long and is called Gonionemus vertens in Latin.
We have not seen it in the Öresund before. It is very small, so it may have been here before, but we have not seen it and we are out every summer and catch jellyfish for our aquarium, says Catharina Marcussen at the Öresund Aquarium.
In Sweden, a variant that does not burn significantly has existed at least since the 19th century. A new variant was found in 2018 on Tjörn and Orust.
It caused serious problems and made people even end up in hospital, says Doris Björling.
Much is still unexplored about the clinging jellyfish, which originally comes from the Pacific Ocean.
They appear, slightly different populations with different genetic composition, here and there, says Doris Björling.
