The Rugby World Cup is in full swing in the UK, but over in Budapest, Hungary, they've developed a different way of doing things — a way that involves snorkels, flippers, and a whole lot of water.

In the video above, two underwater rugby teams flail around in a swimming pool while duking it out over a rugby ball. With the extra dimension that's added by players being able to go up and down as well as left, right, forward and backward — not to mention the fact that people have to keep dashing to the surface for a gulp of air — the whole thing looks even more hectic than regular rugby.

See also: 8 reasons rugby is infinitely more hardcore than American football

It's probably lower impact, but on the other hand there's a significantly greater risk of getting a flipper to the face.