"A marvelous excursion from the beach to the ends of the solar system . . . captivating."—The New York Times "So easy to understand yet so dense with knowledge that you'll never look at waves on a beach the same way again."—San Francisco Chronicle "One of the best popular science books."—The Kansas City Star "Perfect for the weekend scientist."—The Richmond News-Leader A noted physicist and popular science writer heads for the beach to answer common and uncommon questions about the ocean. James S. Trefil, author of Dover Publications' The Moment of Creation: Big Bang Physics from Before the First Millisecond to the Present Universe, explains why the sea is salty, how bubbles form on the water's surface, where waves come from, and other curiosities of the marine world. Dr. Trefil draws upon his unique gift for clarifying complex scientific principles and the theories behind them to present a narrative that is clear, accessible, and utterly compelling.