Welcome to the twilight zone. It’s a real place — but under the sea. The mesopelagic zone, also known as the “twilight zone,” is a mysterious region of the ocean between 200 and 1,000 meters in depth.

Much of the shark focus around the Cape is on great whites roaming close to the shoreline as they prowl for seals, but researchers are finding out that several sharks are actually diving deep into the ...

The big idea — The ocean plays a major role in the global carbon cycle. The driving force comes from tiny plankton that produces organic carbon through photosynthesis, like plants on land. When ...

PLYMOUTH, England — Earth’s oceans are losing light, and it’s happening so fast that scientists are calling it one of the planet’s largest unnoticed habitat collapses. Over the past 20 years, an area ...

A warming climate doesn't just affect dry land — it affects the ocean, too. For years, Earth's ocean has acted as a heat sink for climate... The ocean's currents are shifting. Why? A warming climate ...