The book "In search of the lost oceans in the French mountains(text: Christian Nicollet; Illustrations: Bibi) is available today on the website of Quae, our dear publisher, and will be available in bookstores from January 3rd. How can a pebble formed at the bottom of the oceans a few million years ago end up in the heart of the French mountains? What agonies did he go through? Science but also a bit of dream in this world of brutes! Merry Christmas!