What zone is known as the sunlight zone?

What zone is known as the sunlight zone?

• A. Epipelagic zone
• B. Mesopelagic zone
• C. Bathypelagic zone
• D. Abyssopelagic zone

Answer: (A)

Light presence defines these ocean layers. The sunlight zone is the portion of the ocean where enough light penetrates for photosynthesis, called the photic zone. The epipelagic zone sits in this sunlit band, extending from the surface down to about 200 meters, depending on water clarity. Because light fuels photosynthesis, this layer hosts most surface phytoplankton and the animals that feed on them, making it the characteristic sunlit region of the ocean. Beyond this layer, light fades and the other zones—the twilight mesopelagic, the dark bathypelagic, and the even deeper abyssopelagic—receive little to no light. So, the sunlight zone corresponds to the epipelagic zone.

Light presence defines these ocean layers. The sunlight zone is the portion of the ocean where enough light penetrates for photosynthesis, called the photic zone. The epipelagic zone sits in this sunlit band, extending from the surface down to about 200 meters, depending on water clarity. Because light fuels photosynthesis, this layer hosts most surface phytoplankton and the animals that feed on them, making it the characteristic sunlit region of the ocean. Beyond this layer, light fades and the other zones—the twilight mesopelagic, the dark bathypelagic, and the even deeper abyssopelagic—receive little to no light. So, the sunlight zone corresponds to the epipelagic zone.