The winners of the fifth-annual Our World Underwater international underwater photography contest represent some of the best underwater photos of the past year.

Hosted by divephotoguide.com and wetpixel.com, the underwater photography contest attracted thousands of underwater photos, which were divided into seven underwater photography categories. More than $50,000 in prizes, including premium dive trips, underwater photography equipment and scuba gear, were awarded.

Like all divephotoguide.com and wetpixel.com underwater photography competitions, the 2010 Our World Underwater event donated 15 percent of its proceeds to marine conservation efforts.