gliding and singing

I saw a french movie on video a few years ago, probably made in the
sixties or early seventies. It included a scene with a guy who (in
desperation with his family? I fast forwarded all other scenes so...)
takes off into a wave and refuses to come down and land untill he's
very cold and the sun has set. If you haven't seen it you might not
have missed a lot.

Possibly some of our french friends can help?

Regards

Ole