Norwegian sea lice levels recorded in June were similar to those recorded for the same period last year, according to Seafood Norway's sea lice information center.

"But there is great potential in the tools that the farmers have to further reduce lice levels," Ketil Rykhus, the center's head of health and environment, told IntraFish.

So far this year there has not been any large outbreaks of sea lice outbreaks.

Lice levels include the number of salmon in sea cages, not just recorded salmon lice numbers.