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 ...

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 ...