Currents, Gyres, & Eddies

A tunnel to the Twilight Zone

Blue shark

Scientists track hungry blue sharks as they ride swirling currents down to the ocean twilight zone—a layer of the ocean containing the largest fish biomass on Earth

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How moored profilers work

Moored profilers travel up and down a mooring cable every five days, measuring seawater properties. (Animation by Jack Cook, Woods Hole…

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Tracking the Currents

Concern about the impacts of the Deepwater Horizon oil spill centered on the northern Gulf of Mexico, but some feared…

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Warm Eddies in a Cold Sea

(Animation by Jack Cook, Woods Hole Oceanographic Institution) By Jack Cook, Kate Madin :: Originally published online November 30, 2007

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The Ocean Conveyor

ocean conveyor

A global system of currents, often called the Ocean Conveyor, carries warm surface waters from the tropics northward. At high…

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