We call this one “Bosom Buddies”. Nancy took this picture on a Sea Scout trip to Crystal River in 1995.
For this image, Nancy used her Nikon F3 35mm SLR with a Nikor 20 mm lens in an Ikelite underwater housing. She used Kodak slide film, and I later scanned a 4″x6″ print.
The webpage (and a larger picture), are here.