Now that we are gathered to talk about the sea, let's take a look at it together! I love coming here, sitting on these rocks, gazing at the horizon, and thinking about nothing... Hubert Reeves, one of the world's most renowned astrophysicists, and his friend, oceanographer Yves Lancelot, explain the oceans to their grandchildren in this book. The children ask them all those questions that we adults often don't have immediate answers to - for example: How does the blue get into the sea? Does water mean life? Where does all that water actually come from? Is there a single ocean or multiple ones? Once again, Reeves, along with Lancelot, answers all these questions with the calm and considerate kindness that is characteristic of grandfathers. A charming book and a wonderful narrative that is understandable for everyone.