Sea lions are estimated to have existed on Earth 500 million years before the dinosaurs, but now the species risks disappearing completely.
Halland county board has worked together with Västra Götaland county and Skåne county with an action program established by the Norwegian Sea and Water Authority to improve the highly threatened species.
But in the latest inventory, a total of 100 fish were counted in the whole country, of which roughly 60 in Halland.
Not so long ago there were thousands in the Halland waterways.
Playgrounds empty
In Halland, it has played in Fylleån, Suseån and Genevadsån in previous years, but since a number of years ago, several playgrounds have been empty.
What is behind the sharp reduction and how it can also affect other fish in the waterways, the fishery conservation consultant explains in the clip.