In pictures: The world's best underwater photographs 2010 | Environment | guardian.co.ukA collection of the year's best underwater photography, chosen by the judges of two major competitions - Our World Under Water and the fourth annual Deep International Underwater competition. The two competitions attracted more than 5,000 entries and winners were picked from 20 countries across the world. Prizes for the contests make up the largest prize pool for underwater photography, with $120,
