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String jellyfish, known in Norwegian as Perlesnormanet.
Aquaculture

Norwegian researchers to use AI to identify harmful "pearl chain" jellyfish

Louisa Gairn
2 min read
AI and drone technologies could help to rapidly identify the deadly jellyfish, which last year led to millions of fish mortalities in Norway's aquaculture operations.
Apolemia jellyfish under the microscope. Otherwise known as string jellyfish, apolemia was a leading cause of fish mortality in Norway last winter.
Research

Building knowledge on harmful jellyfish blooms

Louisa Gairn
2 min read
New Faroe Islands project delves into little-studied jellyfish biodiversity, building a baseline of knowledge which could help in tackling harmful jellyfish blooms, a deadly problem for aquaculture.
Harmful jellyfish fragments can enter fish farming pens, stinging salmon and leading to infections and mortalities.
Environment

Harmful jellyfish sightings on the increase in Norway's coastal waters

Louisa Gairn
3 min read
The "barbed wire" jellyfish, whose sting can prove fatal for farmed fish, have been spotted in increasing numbers especially in Western Norway.
"Put preventive measures in place if there are any, and ensure good preparedness. Farmers must be quick to implement measures if they experience an attack by pearl-chain jellyfish," said Bård Skjelstad, director of the Norwegian Food Safety Authority’s aquaculture division.
Aquaculture

Norwegian authorities issue warning over jellyfish risks to fish welfare

Louisa Gairn
2 min read
Fish farmers in Norway are urged to prepare for influx of deadly string jellyfish by Norwegian Food Safety Authority.
"It’s unusual how little we know about something that has had such a significant impact," says marine scientist and JellySafe lead researcher Tina Oldham.
Research

Multi-million Norwegian project aims to tackle jellyfish threat

Louisa Gairn
3 min read
In 2023, unusually high numbers of "pearl chain" or string jellyfish in Norwegian waters led to millions of farmed fish deaths. The JellySafe project aims to prevent this happening in future, with NOK ...
Lerøy Seafood at Seafood Expo Global in Barcelona, 2023.
Aquaculture

Lerøy Seafood: jellyfish impacted harvest volumes in Q4

Louisa Gairn
1 min read
Lerøy's Q4 trading update shows biomass going into 2024 is lower than expected due to effects of string jellyfish during the fourth quarter of 2023.
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