You’ll first encounter the midnight (bathypelagic) zone from 1,000 to 4,000 meters, the abyss (abyssopelagic) zone from 4,000 to 6,000 meters, and the hadal (hadopelagic) zone at 6,000+ meters.

The research, published in Nature Ecology & Evolution, uncovers how these enigmatic creatures defied the odds to diversify in the harsh, resource-poor environment of the bathypelagic zone—part ...

It passed through the Mesopelagic Zone (600-3,300 feet), also referred to as the "Twilight Zone," and continued well into the Bathypelagic Zone (3,300-13,000 feet), or the "Midnight Zone." ...

The study site located in the northwestern Mediterranean Sea was visited nine times in 2005-2006 to collect water samples from the epipelagic (5 m), mesopelagic (200 m, 600 m), and bathypelagic (1000 ...