Shot from the water-drenched cave behind the falling veils of Seljalandsfoss.
You have a fraction of a second before the lens is drained in water, so you must aim blindly, then rip the lens cover off and shoot immediately.
Would be nice to try this on a sunny day though, with white water veils and blue skies, but in this case I had to resort to the "b/w" version on a dull rainy day :-/