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The bathypelagic zone hosts a unique assortment of highly adapted fishes, most of which are extremely rare in museum and research collections. These adaptations help fishes find and eat prey, and find each other, in a permanently sunless habitat.
The resulting bathypelagic, or midnight, zone extends to about 4,000 meters (about 13,100 feet), which reaches the ocean floor in many places. In addition to the lack of light, the midnight zone is characterized by a steady temperature of around 4° Celsius (39° Fahrenheit).
The bathypelagic zone contains sharks, squid, octopuses, and many species of fish, including deep-water anglerfish, gulper eel, amphipods, and dragonfish. The fish are characterized by weak muscles, soft skin, and slimy bodies.
Traveling away from the coast the seafloor will begin to slope down through the mesopelagic and bathypelagic zones into deeper depths. This is the continental slope, the transition between Earth’s continental surface and Earth’s oceanic seafloor.
The ocean water column is made up of five zones: the sunlight zone (epipelagic), the twilight zone (mesopelagic), the midnight zone (bathypelagic), the abyssal zone (abyssopelagic) and the hadal zone (trenches). The upper layer of the ocean is known as the sunlit, or euphotic, zone.
30 Σεπ 2021 · The pelagic realm encompasses the open ocean, from offshore surface waters down nearly to the seafloor. It's divided into the epipelagic, mesopelagic, bathypelagic, abyssopelagic and hadopelagic zones. Pelagic fish come in a vast variety, from deep-sea anglerfish to huge filter-feeding whale sharks.
Using a muscular skin flap, a deep sea anglerfish can either hide or reveal its lighted lure. By pulsing the light and moving the lure back and forth, they successfully attract pelagic crustaceans, fishes, and other prey. The lure is also used to attract a mate. The only individuals that fit the above description are females.
