Ship-to-ship swimming scene?

A swimming Flynn is always a treat, regardless of how old he was. In his documentary where he takes his schooner Zaca on a marine biology expedition with scientists that include his father, he gets in a helicopter and takes photos of whales. Being Flynn, he insists on getting out on the edge of the helicopter to take better pictures and falls in. He swims, keeping the camera above water, until the helicopter makes it around and down with a ladder, which he climbs back up, still smiling and not the worse for wear, except soaked.

The man was as wild and athletic in real life as portrayed, and it must have taken great courage and self-awareness to play his friend John Barrymore as the alcoholic who ruined his career and life, knowing full well the audience would see him as playing himself as much as Barrymore.