2013 National Geographic Photo Contest Winners:
(Nature category) - An over/under water split level image of beautiful crimson red waratah anemones in a rock pool at low tide in Australia. What I really love about over/under photographs is that it gives the underwater element a sense of place. For the viewer it marries the underwater environment with our own familiar world. It links the unknown with the known.
Photo and caption by Matt Smith
(via: the Boston Globe)