This Month in Photo of the Day: Animal Migration Photos

Six Pacific salmon species migrate back to Russia’s remote Kamchatka Peninsula to spawn, their shapes and colors changing dramatically as they move into fresh water. Sockeye, the most valuable kind, dominates traffic in the Ozernaya River.

See more photos from the August 2009 story "Kamchatka Salmon."

Watch Great Migrations this month on the National Geographic Channel »
See more photos of Russia »