- He had wool on his hands. There were big tufts of hair around, says Håkan Bergström about the caught crab.

Just a few weeks after the first find, Håkan Bergström found another crab of the same species.

- It was a nice acquaintance even if you are not allowed to release it into the water again, says Håkan Bergström.

Invasive art

Chinese woolly crab is an invasive species and all new finds must be reported and then killed.

- It has a very high potential to become very many. Then they can change the ecosystem and compete with other species, says Erland Lettevall, investigator at the Swedish Maritime Administration.

Watch the clip to hear Håkan Berström tell more about his find.