From the playlist : Bill Mason: Beyond the wild, beyond the paddle
The film was shot in April 1973 at the aptly named Icy Cape in Alaska, an abandoned Eskimo village once known for spring whaling. The World Wildlife Fund sponsored the expedition, which included several American scientists and was originally going to include four Soviet biologists working in tandem with the Americans. For some unexplained reason, the Soviets pulled out at the last minute. Bill Mason, acting as director/cameraman, and soundman Chester Beachel were added to the group to document the event.
While the divers were prepared for shooting in the frigid waters, they never anticipated that the visibility underwater would be so poor. Nonetheless, they managed to get some spectacular footage of the whales from above and below the ice. The film was shown on TV and enjoyed great success in the non-theatrical market. It also won several wildlife film awards.
— Albert Ohayon