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Beluga whale (Delphinapterus leucas) lifting head from water, Canada

Beluga whale (Delphinapterus leucas) lifting head from water, Canada

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Underwater View of Beluga Whales, Churchill, Manitoba, Canada

Underwater View of Beluga Whales, Churchill, Manitoba, Canada

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School of Beluga whales, Arctic Ocean, overhead view (Composite)

School of Beluga whales, Arctic Ocean, overhead view (Composite)

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A beluga whale sprays water towards visitors during a summer attraction at the Hakkeijima Sea Paradise aquarium in Yokohama, suburban Tokyo on July 20, 2015. Tokyo's temperature climbed over 34 degree Celsius on July 20, one day after the end of the rainy season. AFP PHOTO / Toshifumi KITAMURA (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

A beluga whale sprays water towards visitors during a summer attraction at the Hakkeijima Sea Paradise aquarium in Yokohama, suburban Tokyo on July 20, 2015. Tokyo's temperature climbed over 34 degree Celsius on July 20, one day after the end of the rainy season.           AFP PHOTO / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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A Beluga whale plays with tourist as they visit Mystic Aquarium in Mystic, Connecticut, on June 18, 2017. The aquarium serves as the largest outdoor beluga whale exhibit in the United States. / AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

A Beluga whale plays with tourist as they visit Mystic Aquarium in Mystic, Connecticut, on June 18, 2017. The aquarium serves as the largest outdoor beluga whale exhibit in the United States. / AFP PHOTO / TIMOTHY A. CLARY        (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)