Mexico's Yucatán Peninsula hides Sistema Ox Bel Ha, the world's longest explored underwater cave system, stretching over 524 ...

Scientists exploring beneath Antarctica’s ice uncovered thousands of fish nests arranged in striking geometric patterns.

An autonomous underwater robot called Greyshark is joining NATO’s subsea defenses, patrolling undersea cables as Europe races ...

A vast, mostly submerged landmass in the South Pacific, Zealandia, is now recognized as Earth's eighth continent. Recent ...

Julianne Steers knows her trek to the water at Crystal Cove State Beach, carrying 50 pounds of dive gear, is never easy — but the payoff is worth it. As a marine biologist for the Ocean Institute in ...

This beach in Texas is one of the most popular in part because of its gorgeous landscape and also because it's home to tons of surprising wildlife.

Those who alight from trains at Amsterdam Central Station are flung into an urban maelstrom. With 200,000 daily riders, the station is a critical hub for trains, but also for trams, ferries across the ...