Yes, it is.
-The Epipelagic zone (sunlight zone) -The Mesopelagic zone (twilight zone) -The Bathypelagic zone (midnight zone)
Mesopelagic
The piglet squid lives in the epipelagic zone (sunlight zone) until they are fully matured when they descend in to the mesopelagic zone (twilight zone).
How much sunlight is in the mesopelagic zone
dominant fishes are of the families Myctophidae and gonostomatidae, for more see Biology of fishes by Bond.
epipelagic zone (sunlight zone)- as deep as 200 meters, until they reach full maturation, then the will descend into the mesopelagic zone (twilight zone).
mesopelagic zone, which is also known as the twilight zone. It is situated between the epipelagic zone above and the bathypelagic zone below. The mesopelagic zone receives only faint sunlight, leading to a dimly lit environment with unique adaptations by marine organisms to survive in such conditions.
The division between the epipelagic and mesopelagic zones occurs at a depth of approximately 200 meters (656 feet) in the ocean. The epipelagic zone, also known as the sunlight zone, is characterized by sufficient light penetration for photosynthesis, while the mesopelagic zone, or twilight zone, experiences decreasing light levels and is home to different marine life adapted to lower light conditions. This transition marks a significant change in temperature, light availability, and biodiversity.
The order of ocean zones, from the surface to the deep ocean, are the epipelagic zone, mesopelagic zone, bathypelagic zone, abyssopelagic zone, and hadalpelagic zone. Each zone has unique characteristics based on depth, light availability, and the organisms that thrive there.
The names Epipelagic, Mesopelagic, and Bathypelagic refer to distinct layers of the ocean defined by depth. The Epipelagic zone, also known as the sunlight zone, extends from the surface down to about 200 meters, where sunlight penetrates, supporting photosynthesis. The Mesopelagic zone, or twilight zone, ranges from 200 to around 1,000 meters, where light diminishes and temperatures drop. The Bathypelagic zone, or midnight zone, spans from 1,000 meters to about 4,000 meters deep, characterized by complete darkness and high pressure, where most organisms rely on bioluminescence for communication and predation.
Great white sharks do not primarily inhabit the twilight zone, which is generally defined as the mesopelagic zone of the ocean, between 200 and 1,000 meters deep. Instead, they are typically found in coastal and open ocean waters, usually in shallower depths up to around 1,200 meters. However, they can dive deeper when hunting for prey, but their main habitats are above the twilight zone.
No, the nortical zone and the middle layer of the ocean are not the same. The nortical zone refers to the region of the ocean near the surface where there is abundant sunlight. The middle layer, also known as the mesopelagic zone, is the twilight zone where sunlight is limited and deeper-sea creatures reside.