In the late 1800s, Ekso was known among the nobility in England as having among the best salmon rivers. In summer the Lords could haul in big fish of up to 25 kg. In return, the townsfolk were paid for fishing rights, lodging and local assistance.
Furthest north in the island community Rongevær, at the entrance to Fensfjorden, lies Krossøy. Belonging to the farm are the islands of Krossøy, Husøy, Kårøy, Lyngkjerringa, Søre Kjerringa, Rotøy and Kuhovet. All of them have been inhabited. On Krossøy itself today there are four holdings. The marine use environment here is one of the best preserved along the West Norwegian coast.