Washington's National Zoo Previews "American Trail" Exhibit

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A sea lion blows bubbles as it swims by a viewing area during a sneak... News PhotoAnimal,Beach,Blowing,Bubble,California,Fashion,Gallon,Geographical Locations,Horizontal,Human Interest,Looking,Machinery,Mountain Peak,New,Pacific Ocean,Rock - Object,Sea,Smithsonian National Zoological Park,Summer,Swimming,USA,Washington DCPhotographer Collection: Getty Images News 2012 Getty ImagesWASHINGTON - AUGUST 29: A sea lion blows bubbles as it swims by a viewing area during a sneak peak of the new American Trail at the Smithsonian National Zoo August 29, 2012 in Washington, D.C. The 300,000 gallon sea lion pool, designed in the style of a rocky California beach, is complete with a wave machine and is the new home to four female California sea lions: Summer, Sidney, Calli and Sophie. The trail, featuring animals and horticulture native to the Americas, opens to the public on September 1. (Photo by Allison Shelley/Getty Images)