The Sunlight Zone corresponds to which pelagic zone?

• A. Mesopelagic Zone
• B. Benthic Zone
• C. Epipelagic Zone
• D. Abyssopelagic Zone

Answer: (C)

In open-ocean geography, light defines how we divide the water column. The Sunlight Zone is the upper part where enough light reaches for photosynthesis, so it corresponds to the epipelagic zone in the pelagic realm. This layer typically extends from the surface down to about 200 meters, where sunlight still penetrates. Below that, light fades, placing the twilight region in the mesopelagic and deeper zones like abyssopelagic, while the benthic zone refers to the ocean floor. Since the Sunlight Zone is the sunlit portion of the water column, the epipelagic zone is the correct match.