With few words (minimal narration is by actor Pierce Brosnan), symphonic music, and exquisite cinematography using cutting edge underwater photography, filmmakers Jacques Perrin (Winged Migration, Microcosmos) and Jacques Cluzaud present both the bizarre, otherworldly species and common critters that inhabit various niches of the Earth’s ocean’s ecosystems for our viewing pleasure. From the Great Barrier Reef to the Arctic Ocean, to the Mediterranean and Caribbean Seas, discover a part of the life of a blanket octopus, mobula ray, marine iguana, sea nettle, stonefish, blue whale, walrus, garden eel, spinner dolphin, sea lion, baby sea turtle, penguin, sea urchin larva, horseshoe crab, and much more, all of whose mysterious existences combine to keep life in the balance in the watery realm beneath the waves. Also included are the unfortunate effects that humans continue to make on this forgiving but fragile habitat.