Creatures of the deep: in search of the sea's "monsters" and the world they live in

Part one. Down through the layers ; The layers of the sea ; Surface waters: the Epipelagic (Euphotic) Zone ; Middle waters: the Mesopelagic (Disphotic) Zone ; Deep waters: the Bathypelagic (Aphotic) Zone ; Deeper waters: the Abyssopelagic Zone ; Deepest waters: the Hadal Zone

Part two. A fish-eat-fish world ; Planktonic dramas ; The cosmopolitan copepod ; Jellyfish: biding time ; Big sharks 1: the plankton-strainers ; Dancing with squid ; Big sharks 2: the flesh-eaters ; Killer whale vs shark ; Down deep with dragonfish ; The web

Part three. Trekking down the ridge ; The longest mountain chain in the world ; The world ocean floor ; Creatures in the sulfur garden ; Farther along the ridge and back in time ; Black smokers and new life-forms ; Life among the archaeans

Part four. Counting the citizens of the sea ; The census of marine life ; Finding a place for ocean citizens to live ; Deciding on the kind of ocean we want or life among the jellyfish ; Epilogue.