The Sunlight Zone is another name for which pelagic zone?

Prepare for the Marine and Coastal Ecosystems Test. Engage with flashcards and multiple-choice questions, with hints and explanations. Ace your exam!

Multiple Choice

The Sunlight Zone is another name for which pelagic zone?

Explanation:
Light powers life in the upper ocean, so the Sunlight Zone is the part of the water column where enough light penetrates to support photosynthesis. This layer runs from the surface down to about 200 meters, which is why it’s also called the epipelagic zone. The term epipelagic comes from Greek roots meaning “upon the sea,” reflecting its position at the sea surface. Because sunlight is abundant here, phytoplankton can photosynthesize and form the base of the food web, supporting a wide variety of marine life. Deeper layers receive little to no light—the twilight mesopelagic, followed by the dark bathypelagic and abyssopelagic—so they are much less productive in terms of photosynthesis. Therefore, the Sunlight Zone corresponds to the Epipelagic Zone.

Light powers life in the upper ocean, so the Sunlight Zone is the part of the water column where enough light penetrates to support photosynthesis. This layer runs from the surface down to about 200 meters, which is why it’s also called the epipelagic zone. The term epipelagic comes from Greek roots meaning “upon the sea,” reflecting its position at the sea surface. Because sunlight is abundant here, phytoplankton can photosynthesize and form the base of the food web, supporting a wide variety of marine life. Deeper layers receive little to no light—the twilight mesopelagic, followed by the dark bathypelagic and abyssopelagic—so they are much less productive in terms of photosynthesis. Therefore, the Sunlight Zone corresponds to the Epipelagic Zone.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy