The midnight zone and the abyssal zone
aphotic zone
The aphotic zone is permanently dark. Organisms would need to be able to manufacture and obtain food without photosynthesis.
sea turtle
this could be the aphotic zone where only 1% of the surface light reaches. The Bethnic zone is the VERY bottom and is basically the sediment zone.
climate zone
the lowest part of the ocean where it is so dark that it looks like midnight
The layer that is permanently devoid of light is the abyssal zone, which lies beneath the photic zone of the ocean, typically at depths greater than 1,000 meters (3,280 feet). In this dark region, no sunlight penetrates, resulting in extreme conditions with high pressure and low temperatures. The abyssal zone is home to unique organisms that have adapted to survive without light, relying on chemosynthesis or scavenging.
The third layer of the ocean is the Bathypelagic Zone. This is also called the dark zone. There is no sunlight in this zone, and it extends from 1,000 meters to about 4,000 meters in depth. The pressure is extremely high in this zone.
The deep zone appears dark because less sunlight penetrates to that depth in the ocean, resulting in low visibility. Additionally, the deep zone often lacks colorful marine life and features, contributing to its dark appearance.
It is called dark zone
The permanently dark zone below the photic zone is called the aphotic zone. In this region, sunlight is unable to penetrate deep enough for photosynthesis to occur, resulting in a lack of primary production by plants. Organisms in this zone rely on alternative energy sources, such as detritus and chemosynthesis.
they are two types of places where animals live light zone and dark zone in light zone may be dolphins, sea dogs,shrimps,some little sharks,etc..... in dark zone may be sharks,whales,sellfish,etc.......