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Photo: NOAA Office of Ocean Exploration and Research -
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Photo: ChrisHepburn / Getty Images Jellyfish Sleep Kind of Like Humans. Here’s What That Tells Us
Interesting, because they don’t have brains, or spinal cords, or even an anus like us.
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Tomasz Bobrzynski/Getty Images -
Photo: Cheryl Chan / Getty Images -
Photo: HollenderX2 / Getty Images Where Do Humans Fall on the Mammal ‘Monogamy Scale’?
Seals can’t be tamed.
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Photo: Adrienne Bresnahan / Getty Images
