Fall color and rock formations casting reflections in calm water. Reflection of autumn foliage in water, Canada Clouds reflected on the smooth waters of Iskwasum Lake A water lily pad holds droplets of rain Polar bear, Ursus maritimus, on pack ice at water's edge. The slow waters of wetlands stir fallen leaves creating spots of blurred yellow A cascade of water thunders over Niagara Falls.; Niagara Falls, New York. Blue water, Colorado River, Grand Canyon National Park, Arizona. Banff Park landscape with fog and reflections, Banff National Park, Alberta, Canada Sunset over a Chesapeake Bay shoreline.; Kent Island, Maryland. Steller Sea lions take to the waters of the Gulf of Alaska amid foam and spray Waterfall in between fall colors in a forest A group of caimans wait for fish, Pantanal, Brazil Sandhill cranes silhouetted against a twilight sky, Nebraska A stone bridge crosses the headwaters of the Susquehanna River, New York A clump of grasses is framed by reflections of sky and trees in the lake, Bighorn National Forest, Wyoming Orange sunset over a lake Scenic view of a lake in Jasper National Park in Canada Grand Prismatic Spring, aerial view, Yellowstone National Park Sculpted icebergs under clouds near the shore of Couverviller Island. A view of Death Lake and the surrounding forests and cliffs, Northwest Territories, Canada Providenciales Island, Turks and Caicos Islands Scenic Travertine Falls on the Little Colorado River. Cirque of the Towers, Lonesome Lake, Popo Agie Wilderness, Wyoming Cormorant fisherman poles a bamboo raft near limestone karst mountains, Li River, People's Republic of China View of the Colorado River flowing through Nankoweap Canyon. Painted Desert, Petrified Forest National Park, Arizona. Colorado River, Marble Canyon, Grand Canyon National Park, Arizona. Adelie penguins walk on a beach where a cruise ship is anchored. Old man practicing Tai Chi