Relating to the deep layer of the open ocean, extending from about 1000 to 4000 meters depth. This zone is completely dark, cold, and under immense pressure.
From Greek 'bathys' meaning 'deep' and 'pelagic' meaning 'of the sea.' The term was established in oceanographic literature in the mid-20th century as deep-sea exploration revealed distinct biological and physical characteristics at different depths.
The bathypelagic zone is Earth's largest habitat, yet remains more mysterious than the surface of Mars! Here, in eternal darkness and crushing pressure, bizarre creatures like vampire squid and gulper eels have evolved incredible adaptations, including expandable jaws and transparent bodies.
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