Scientists exploring the South China Sea's Dragon Hole, a deep underwater sinkhole, discovered a thriving microbial world and an astonishing 1,700 unclassified viral types. This extreme, ...

SARASOTA, Fla. -- A team of scientists is gearing up to explore a mysterious "blue hole" off the Gulf Coast of Florida. The National Oceanic and Atmospheric Administration described blue holes as ...

Scientists discover underwater hole so deep, they haven’t even reached the bottom yet ...

Mexico’s Tam Ja Blue Hole has been confirmed as the world’s deepest, reaching at least 1,380 feet. Scroll down to know what ...

Lake Huron’s Thunder Bay National Marine Sanctuary is home to at least 10 underwater sinkholes. Formed as groundwater eroded ...