From a protected cove on Long Island, Dean’s Blue Hole—Earth’s deepest known underwater cave—plunges more than 600 feet into darkness. The entry to South Passage is decorated by ...

Beneath the land surface of the Bahamas, the underwater caves known as blue holes stretch for hundreds of miles in all directions. Today, these labyrinthine passages host a variety of tiny sea ...

Our goal was to map one of the world’s unique ecosystems: underwater caves, aka “blue holes.” Their biogeochemistry creates hot spots for extremophile life-forms. They also contain fossils ...

Beddows, 42, has made a similar transformation in her own career. When she first started studying the geology and hydrology of underwater caves, she worked with experienced divers who brought back ...

A group of divers have connected two underwater caverns in eastern Mexico to reveal what is believed to be the biggest flooded cave on the planet, a discovery that could help shed new light on the ...

But there is hope, says Thymann, and documenting this dense habitat of underwater caves may be the first step in protecting the manatees that live there. Receive a weekly dose of discovery in your ...