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Ocean Twilight Zone


The Ocean Twilight Zone’s crucial carbon pump

Ken Buesseler

When CO₂ enters the ocean, where does this heat-trapping gas go? WHOI geochemist investigates how much carbon from the surface ocean is dispatched to the ocean twilight zone–the midlayer of the ocean–and on to the deep ocean.

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Fish with Flashlights

Down in the dark and shadowy ocean twilight zone, countless species—bristlemouths, lanternfishes, jellies, and others—rely on bioluminescence for a variety of important functions, including finding their next meal, outsmarting predators, and looking for mates.

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