An odyssey around the world to discover the largest and least explored habitat on Earth. New technologies now make it possible to go further in the discovery of the oceans than we would have thought possible. From the shallow waters of the shoreline to the deeper and more mysterious worlds, the film reveals the unseen stories of the most amazing creatures of the oceans. The dolphins jump for joy through the waves, while the viewer begins are traveling in the big blue. The first stop will be the coral reefs, where he meets fascinating characters like the smart tusk fish who uses a tool to open his food. In the great forests of the sea, he finds a cunning octopus that protects itself in a shellfish armory to hide from predators. By traveling through our oceans, spectators share these extraordinary discoveries and discover the spectacular world of life under the waves.