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Contents
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Exploring the Largest Habitat on Earth Exploring the Largest Habitat on Earth
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Life in the Stygian Desert Life in the Stygian Desert
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The Rules of Depth Zonation The Rules of Depth Zonation
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The Ups and Downs of Deep-Sea Life The Ups and Downs of Deep-Sea Life
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Export Production: Food for the Abyss Export Production: Food for the Abyss
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The Habitat of the Deep-Sea Floor The Habitat of the Deep-Sea Floor
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On the Antiquity of Deep-Sea Life On the Antiquity of Deep-Sea Life
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Notes and References Notes and References
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Ten The Deep, the Cold, the Dark: Life at the End of the Line
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Published:June 2009
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Abstract
This chapter discusses deep-sea life, the largest life habitat on Earth. It focuses on the diversity of organisms living in the mesopelagic and bathypelagic depth zones of the ocean—that is, the twilight zone and the completely dark zones. The chapter examines the role of bioluminescence and other special adaptations that control the behavior of deep-sea animals. It also discusses depth zonation, systematic measurements of light transmission in the sea, and vertical migration. Vertical migration is an integral part of life in the mesopelagic zone—the migrating animals come up to feed and go down to hide. Among the fishes of the twilight zone, the lanternfishes and the hatchet fishes are prominent participants in daily vertical migration.
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