The ocean's midnight zone, also called the bathypelagic zone, spans from 1,000 to 4,000 meters (3,300 to 13,100 feet) below the surface.
Notes on verification
Confirmed by multiple authoritative oceanographic sources including NOAA, Smithsonian, and WHOI, with consistent depth ranges cited across all.
Sources
- Remarkable new swimming sea slug in the deep sea | ScienceDaily (sciencedaily.com)
- https://oceanservice.noaa.gov/facts/light_travel.html (oceanservice.noaa.gov)
- https://ocean.si.edu/ecosystems/deep-sea/deep-sea (ocean.si.edu)
- https://www.whoi.edu/ocean-learning-hub/ocean-topics/how-the-ocean-works/ocean-zones/midnight-zone/ (whoi.edu)