A woman undresses underwater then swims under a boat which has a glass bottom.
"Here's a lady who has adopted a new way of shredding those outside but necessary garments. (Watch this - it might be handy if you happen to sit on a wasp's nest.)"
Woman dives into a lake fully clothed. We see her undress underwater. First she takes off her dress, then her shoes and socks. "Visitors to this unique crystal-clear lake are about as private as goldfish in a bowl." M/S of two men sitting in a boat looking down at the bottom of their boat. Cut to their point of view which reveals that the boat has a glass bottom. Lots of fish are seen, then we see a woman swim underneath the boat - the same woman as earlier presumably. Looks like this story was shot in America.
Was an item in Eve's Film Review issue number 521.