Jellyfish season has begun along Norway's coast, posing a risk to aquaculture.
The Norwegian Institute of Marine Research reports fewer sightings of the "pearl chain" jellyfish so far this year.
A major bloom of the species in 2023 proved deadly for up to 3 million farmed fish.
Apolemia "pearl chain" string jellyfish tend to appear in Norway's coastal waters from September to January, with a peak in November.
According to the Norwegian Institute of Marine Research, the string jellyfish (Apolemia sp.) has reappeared in Norwegian waters this autumn, although with relatively few sightings compared to previous years.
The string jellyfish (Apolemia sp.) is a colony species known for forming long, thread-like chains, and can be deadly for farmed fish.
Author's summary: Jellyfish season starts in Norway, threatening aquaculture.