From the shallows of the shoreline to the inky black trenches cutting across the floor, oceans house a complex and varied ecosystem. The sea's intricate food webs support more life by weight and a greater diversity of animals than anywhere else on the planet. Through awe-inspiring color photography, move through the waves and dive deep into the ocean's waters. Here, great white whales swim gracefully in spite of their enormous bulk, and massive coral reefs, built by countless millions of tiny creatures, grow. Further below, organisms feed off the chemicals pouring from volcanic chimneys, and at the very bottom, where intense pressure makes exploration virtually impossible, radically different life forms reside in a range of habitats. Special sections cover such subjects as dolphins, hammerheads, coral photography, and camouflage in detail, as well as the devastation wrought to this watery environment by humans--and what's being done to protect it.