Jonathan White has a few things to share about the way the ocean ebbs and flows. For his new book, “Tides: The Science and Spirit of the Ocean,” the writer, sailor and surfer completed a worldwide study that spanned 20 years to absorb the rhythmic patterns of where the ocean greets the land. West Marin residents will have the chance to hear him detail his vast findings on March 12 at the Red Barn Classroom,…