Dive Beneath Greenland's Mysterious 'Terra Incognita'
The expansive gray-and-white landscape might look barren, but scientists say life lurks in the Arctic waters below.
Photo Gallery
Pictures From Pristine Seas Expeditions in Palau
See some of the most incredible underwater images taken by the pristine seas expedition divers in the waters around Palau, in the Western Pacific.
This "Robo-Dog" Could One Day Be an Ocean Explorer
Watch a new robot that walks along the seafloor, and looks a bit like a dog that sinks in water, could offer new options for recording aquatic research sites, thanks to work by National Geographic Explorer Marcello Calisti.
