User blog:The Woolly Howl/Where do wild Skrills live in?

According the the episode A View to a Skrill Part 1, Fishlegs mentioned that a Skrill's food of choice is sheep. As sheep is domesticated, the Skrills should have lived near Vikings in order to hunt down and eat these sheep. As they live close to them, Vikings should have great knowledge about Skrills. However, Skrills are considered rare and little is known about them, which makes it unlikely for them to live near Vikings. So, my question is where exactly do Skrills live in?