Hickson tells the story of the expeditions that first dredged the ocean floor and describes the cold, dark, crushing conditions of the abyss. He then surveys the creatures found there, from protozoa, corals and sea urchins to worms and molluscs, asking how they reached such depths and how they live in perpetual night.
A clear Victorian introduction to deep-sea biology, written when the abyss was still largely unexplored. Download the free EPUB.