There's something undoubtedly fishy about this footage of a 'serpent-like' sea creature gliding through the waters of an Icelandic river.

The video, captured last week by Hjörtur Kjerúlf, shows a mysterious creature swimming through the cold water of the glacial river Jökulsá í Fljótsdal, in east Iceland.

And in just over a week, it has already become a monster hit on the internet.

Some are claiming this grainy footage is proof of the existence of the legendary beast Lagarfljótsormurinn - Iceland's version of Scotland's Loch Ness Monster.

The notorious 'snake-like' creature is said to live in the Lagarfljót lake, which is 25 miles long and 367 feet deep - and it has been the subject of many a supposed sighting since reports of it first emerged in 1345.

However, an expert on the legendary Lagarfljótsormurinn lake beast believes this footage is fake.

Loren Coleman, director of the International Cryptozoology Museum in Portland, Maine, has researched the Icelandic

Read more: http://www.dailymail.co.uk/news/article-2098225/Icelands-Loch-Ness-monster-Giant-serpent-like-sea-creature-caught-camera-swimming-glacial-river.html#ixzz1lp0o3QFR