Peering into the secret world of killer whales in the Pacific northwest, a diver and filmmaker glimpses not only the rich surroundings in which they choose to live, but a side of these powerful predators few see – their efforts to maintain a close family life and the moments when they appear to be looking for nothing more than sheer fun!

In the mid-Atlantic, we go where few have been before: in the midst of a group sperm whales – perhaps the most elusive of the great whales. Near the islands where these giants congregate, where humans once hunted them, this is an unprecedented portrait of perhaps the world’s greatest predators at close range.

Following undersea giants, we witness two great spectacles of the ocean: a mass spawning off Australia that draws a menagerie of predators, including the largest fish in the sea, and on the Pacific island of Yap an extraordinary concentration of giant manta rays, among the most graceful yet mystifying creatures on earth.

One man’s fascination with whales leads him into two hidden worlds: a remote coastline marked by violence, where one of nature’s most dramatic hunts unfolds in an instant of fierce surprise, and by contrast, a bank far offshore where humpback whales gather to breed and raise their young – the reef of a thousand whales.

One man’s fascination with whales leads him into two hidden worlds: a remote coastline marked by violence, where one of nature’s most dramatic hunts unfolds in an instant of fierce surprise, and by contrast, a bank far offshore where humpback whales gather to breed and raise their young – the reef of a thousand whales.