International research and highly-specialized divers are bringing an underground, underwater world to the surface ...

Scientists were stunned to find two different spider species peacefully cohabiting in massive 1,140-square-foot web.

They dropped nearly 200 feet through waterfalls, fog, and absolute darkness before landing inside the largest cave room in ...

This incredible submerged cave network is the longest of its kind in the world and plays a vital role in the region.

Serban Sarbu, a cave scientist, thought he’d seen everything — until he entered a pitch-black cave along the Albania–Greece ...

Paddle the river, bike the historic Ohio and Erie Canal Towpath, or hike more than 125 miles of trails as you spot wildlife.

Learn more about how scientists uncovered an unlikely community of arachnids in Europe’s Sulfur Cave and why these spiders ...

This walkthrough takes you inside Sung Sot Cave, the largest and most famous cave in Ha Long Bay. The video highlights ...

The world's largest spider web has been discovered in an underwater cave on the border of Greece and Albania in Europe The web spans an areas of 1,076.4 square feet The web houses a colony of ...

Sulfur caves are among the most extreme habitats on Earth. They are completely dark and filled with hydrogen sulfide gas, which is toxic to most life-forms. Inside, species’ survival depends on ...