Lagarfljótsormur

This story has begun to circulate recently:
"A video was recorded this weekend of what may or may not be the legendary Lagarfljóts Worm — Iceland’s answer to the Loch Ness Monster.
The video was taken of what looks like a giant, icy swimming snake in the Jökulsá í Fljótsdal river, which runs in to Lagarfljót. The unexplained creature, or phenomenon, appears to be swimming upstream, against the current." Read more, with link to the video footage, at Ice News.