michael phelps of the united states dives off the starting blocks in the mens 100m butterfly - Olympic Swimming Starting Blocks
{"Image ImageDescription": "LONDON, ENGLAND - AUGUST 02:  Michael Phelps of the United States dives off the starting blocks in the Men's 100m Butterfly heat 6 on Day 6 of the London 2012 Olympic Games at the Aquatics Centre on August 2, 2012 in London, England.  (Photo by Adam Pretty/Getty Images)", "Image Copyright": "2012 Getty Images"}