Assertion: aquarium's dolphin | /r/AtLocation | the polar play zone
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text: In 1991, Shedd Aquarium opened the Oceanarium (known since 2010 as the Abbott Oceanarium), a large addition to the aquarium that features marine mammals, including Pacific white-sided dolphins, beluga whales, sea otters and California sea lions, as well as penguins, that are located in the Polar Play Zone.