invasive species

Russian Monster Salmon is Spreading in Sweden

It has a black tongue, a hump on its back and defends its mating grounds to the death - the invasive Russian humpback salmon has...
Text: Petra Hedbom/TT
Photo: Eva Thorstad/Norsk Institutt for naturforskning, Tom Staveley/SLU
Graphics: Johan Hallnäs/TT
01:13

Invasive species: Part 6 – Sargasso Snare

Sargasso seaweed, a brown algae, was initially discovered in 1985 in northern Bohuslän and has since become prevalent along the Swedish west coast....
Reportage: Lena Scherman
Photography: Göran Ehlmé
1:07

Invasive species part 5 – Clinging Jellyfish – alien but not invasive

In English the species name is "clinging jellyfish" in Swedish it is called “klängmedusa”....
Reportage: Lena Scherman
Photo: Tobias Dahlin
01:01

Invasive species: Part 4 – Japanese giant oyster

The Japanese Giant Oyster is larger than our domestic variety, and its edges are so sharp that medical services on the west coast have issued...
Reportage: Lena Scherman
Foto: Tobias Dahlin, Kimmo Hagman
1:36

Invasive species Part 3 – The Cormorant – not invasive

This is what it looks like when cormorants have taken over an island in Stockholm’s archipelago. It’s not exactly attractive when you were expecting green...
Reportage: Lena Scherman
Photography: Simon Stanford
1:02

Invasive species part 2 – The comb jelly Mnemiopsis leydyi

The small but spectacularly beautiful comb jelly Mnemiopsis leydyi, can reproduce at a dismaying speed, and copes with warm and cold water and even different...
Reportage: Lena Scherman
Photo: Tobias Dahlin
1:38

Invasive species: Part 1 – The red lionfish

The most likely scenario is that the beautiful red lionfish spread into the sea off the coast of Florida when an aquarium was smashed by...
Reportage: Lena Scherman
Photo: Johan Candert, Göran Ehlmé
svartmunnad smörbult

Invasive fish species found off Örnsköldsvik

The invasive fish species black-mouthed goby is already present along the Baltic coast. But now the fish species has made its way far up into...
Text: Johanna Engman/TT
Photo: Eric Engbretson / U.S. Fish and Wildlife Service / TT, Johan Hallnäs/TT
09:00

Burning Invasion on the West Coast

The burning clinging jellyfish was discovered in 2018 and has found its way home in the water at Lilla Askerön, in Bohuslän. Ideally, it wants...
Reportage: Fanny Jönsson
Photo: Leif Eiranson
UV Photo: Tobias Dahlin
Editor: Alexandre Gobatti
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