U is for underwater

For a long time I could not find a suitable image for U. Then Janet gave the idea: Underwater.
I remembered a field trip from the University to the South of France. The topic was marine biology and we should snorkel for sea animals. I had a Canon IXUS at that time and my friend Michael (Paradise) had an underwater housing for it, which he lent me. This photo shows a fellow student.
Friends, you feel so free in the water. When I see this picture, I would like to have an underwater housing for my camera and go to the sea soon...