Washington's National Zoo Previews "American Trail" Exhibit

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Animal keeper Rachel Metz interacts with a sea lion during a feeding... News PhotoAnimal,Beach,California,Communication,Event,Fashion,Feeding,Gallon,Horizontal,Human Interest,Machinery,New,Pacific Ocean,Rock - Object,Sea,Smithsonian National Zoological Park,Summer,USA,Washington DC,Zoo KeeperPhotographer Collection: Getty Images News 2012 Getty ImagesWASHINGTON - AUGUST 29: Animal keeper Rachel Metz interacts with a sea lion during a feeding session at a preview 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)