Pioneering oceanographer Curtis Ebbesmeyer seized the world’s imagination when he and his worldwide network of beachcomber volunteers traced ocean currents using thousands of sneakers and plastic bath toys spilled from storm-tossed freighters. Now, for the first time, Ebbesmeyer tells the story of his lifelong quest to solve the sea’s mysteries. He recounts how flotsam has changed the course of history. He reveals the rhythmic and harmonic order in the vast oceanic currents and uncovers the astonishing story of flotsam, altering the world’s view of trash, the ocean, and our global environment.