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 ...