Baleinopolis or the fantastic story of a city from the bottom of the sea... parallel to us! How about it? This city, well alive and governed around societies as numerous as there are cetacean species, is as unknown as it is immense! These giants only let themselves be seen for the duration of a fin on the surface of the water. Thanks to the meticulous observations made by scientists, the tropical aquarium immerses us in the discovery of how these animals work. Our journey takes us from one bay to another: we participate in the organization of killer whale, humpback whale or dolphin societies; we learn how they live together and how common behaviours are born, a true culture transmitted from generation to generation; finally we become aware of the environmental danger in which they find themselves today. Thanks to videos, digital games or drawings, it is as if we had lived with them for a few moments! An exceptional opportunity to dive into the heart of the oceans, and to come out with the desire to protect them at all costs.