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The bathypelagic zone or bathyal zone (from Greek βαθύς (bathýs), deep) is the part of the open ocean that extends from a depth of 1,000 to 4,000 m (3,300 to 13,000 ft) below the ocean surface. It lies between the mesopelagic above and the abyssopelagic below.
Deepsea lizardfish are typical inhabitants of the deep ocean floor. They are found circumglobally, in tropical and temperate latitudes (65° N to 40° S) at depths of 600–3,500 m in the aphotic zone, where water temperatures range between 4 and 3 °C. [6] The energy-poor ecosystem dictates low population densities.
The bathypelagic and abyssopelagic zones are aphotic, meaning that no light penetrates this area of the ocean. These zones make up about 75% of the inhabitable ocean space. [2] The epipelagic zone (0–200 metres (0–656 ft) deep) is the area where light penetrates the water and photosynthesis occurs. This is also known as the photic zone.
The findings are incredibly important for the understanding of ocean life in the bathypelagic zone, which lies between 1,000 and 4,000 meters deep and is the largest animal habitat on Earth, the ...
A scale diagram of the layers of the pelagic zone. Mature snipe eels generally occupy the Bathypelagic Zone. Snipe eels are found in every ocean and generally occupy depths of 300–600 m, though specimens have been caught nearer the surface at night, and storms occasionally result in individuals being stranded on the shore. [21]
Below the mesopelagic zone it is pitch dark. This is the midnight or bathypelagic zone, extending from 1000 m to the bottom deep water benthic zone. If the water is exceptionally deep, the pelagic zone below 4,000 metres (2.5 miles) sometimes is called the lower midnight or abyssopelagic zone.
They also exist at a wide range of depths between the surface and thousands of meters deep into the bathypelagic zone, depending on the water's ideal feeding and breeding conditions. There is also some evidence that certain species within the family Stomiidae exhibit migratory behavior .
Lanternfish are well known for their diel vertical migrations: during daylight hours, most species remain within the gloomy bathypelagic zone, between 300 and 1,500 m (980 and 4,920 ft) deep, but towards sundown, the fish begin to rise into the epipelagic zone, between 10 and 100 m (33 and 328 ft) deep.