This Month in Photo of the Day: Photos From the 2009 International Photo Contest

Horseshoe crabs gather at dusk to mate along the shore of the Delaware Bay in Cape May, New Jersey. High tides and a new or full moon bring the largest concentration of crabs to the shoreline each May.


See more photos, see winners' galleries, download wallpaper, and solve puzzles from the 2009 International Photo Contest.

Find out how to enter the 2010 National Geographic Photo Contest »