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hippo_b: a calm profile
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hippo_b: three penguins
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hippo_b: photogenic.
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hippo_b: a dolphin and fish
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hippo_b: a swimming penguin
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hippo_b: looks like swimming in the air
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hippo_b: I swim.
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hippo_b: a penguin in the water
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hippo_b: a view from top of the tank
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hippo_b: the dolphins' tunnel
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hippo_b: three dolphins and a fish
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hippo_b: a profile
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hippo_b: a profile #2
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hippo_b: the whole body
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hippo_b: turning
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hippo_b: like two little birds
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hippo_b: swimming with his (or her?) eyes closed
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hippo_b: a penguin in the water #2