his documentary goes to coral reefs of the Bahamas and the waters of the Kingdom of Tonga for a close encounter with the surviving tribes of the ocean: wild dolphins and belugas, the love of a Humpback mother for her newborn calf, the singing Humpback males, an orca the mighty King of the ocean, and the gentle manatee. Little-known aspects of these creatures capable of sophisticated communication and social interaction. Documents the life of these graceful, majestic yet endangered sea creatures

Overview from themoviedb.org