La planète des Géants

More than 50 million years ago, the ancestors of the Whales and other Cetaceans returned to the ocean. This might seem like a backward step: how could a mammal breathe, give birth, suckle its young, sleep and feed underwater? Nonetheless, they succeeded in conquering the depths of the whole planet. To survive, they developed mysterious means of communication and new hunting techniques.Whale song, tail-slapping by Sperm Whales, Dolphins whistling: what are these giants of the deep saying through…