This book plunges the reader into the heart of the sea. It is an elegantly-written account of one photojournalist's experience studying marine natural history and ecology. Illustrated with classic black and white photography, and annotated with references to classic marine literature, this book takes the reader from California to New Guinea, Fiji, Palau, and Tonga, to the Caribbean, to Alaska, and back again. Along the way, a quest to shed light on marine limits, symbiosis, and biogeography ties the adventures together. It will appeal to anyone who snokels, swims, scuba dives, surfs, studies marine biology, or loves the sea.