Microscope images that look this way usually get a lot of their color from polarized light—but not this one. Valeriia Poliukhova, a postdoctoral researcher at Georgia Tech, captured this photo ...

These Smithsonian Magazine Photo Contest images feature the captivating creatures that live beneath the waves A hawksbill sea turtle munches away on a sponge near Juno Beach. Smithsonian Photo ...

These awe-inspiring pictures reveal what icebergs look like from below. The images were taken in the freezing crystal-clear waters of Greenland by underwater lensman Tobias Friedrich. He dived up ...

In an expedition unlike any other, National Geographic photographer Laurent Ballesta took a cold, harsh plunge below the sea ice in the deepest dive ever under ... makes the images you see here ...

But as of last month, two Europeans have at least walked on the bottom of the sea while pretending to be on the Moon. The European Space Agency has published pictures of an extraordinary-looking ...