The amazing story and photos from the underwater exploration of Imperial Russia’s frigate Oleg shipwreck by National Geographic photographer Viktor Lyagushkin.

Tucked away in a Russian region, get to know an underwater secret spot: Vad Lake.

Hammered by Norse gods of old, Iceland's mirror lakes conceal a spreading rift below, a molten gash that cuts to the very center of the Earth.

Looking for an out-of-the-ordinary shark dive? Here are five you probably haven't heard about but should — plus 15 favorites we just can't get enough of.

Can submersible drones help make solo diving safer? Researchers are developing autonomous underwater drones to help assist solo divers and reduce accidents.

Residents of the Faroe Islands have slaughtered about 250 pilot whales in the last 24 hours, according to reports from Sea Shepherd and global media.

Lake Garda is a holiday hotspot for sun-seeking tourists, who come to sample the delicious local cuisine, the fine wines and the stunning scenery — and diving.

Scotland's Scapa Flow boasts one of the highest concentrations of diveable World War I wrecks in the world.

Germany's Lake Constance is a prime dive site for everyone, from raw novices to seasoned technical divers.