For decades, scientists have known about “equatorial waters”—masses of ocean that separate waters north and south of the equator—in both the Pacific and Indian oceans. But a similar mass in the ...

Here’s what you’ll learn when you read this story: Stare out into the grand expense of the ocean, and it can truly seem endless. Although oceans appear vast and uniform, they’re actually a mixture of ...

The global ocean circulation comprises interconnected currents and gyres that redistribute heat, salt and biogeochemical tracers, thereby regulating Earth’s climate and marine ecosystems. Surface ...