Well I guess if anything good comes from Global Warming and melting icecaps... https://www.youtube.com/watch?v=qFKgQwou7ls
Pretty sketchy, they look pretty close to the falling ice. If you want a laugh look at the coments below the vid some douche insists it's all photo-shopped.
always someone like that. but def sketchy... its not like there arent chuncks of ice all over/under the surrounding water.
You ought to see his other video where he's riding a hog and slips between the 00 buckshot blast from a 10 gauge shotgun 20 ft away. Just kidding but the concept still works, there had to be thousands of chunks of ice in that wave.