The Atlantic

Hippos Can’t Swim—So How Do They Move Through Water?

The semiaquatic mammal leverages its own buoyancy and bone density to charge through the water.
Source: David W Cerny / Reuters

People are talking about hippos this week, at least in part because the Cincinnati Zoo’s beloved baby hippopotamus, Fiona, is now three months old—a milestone that seemed uncertain when she was born prematurely in January.

Fiona’s doing great—so great that she’s “a little bit dangerous to actually cuddle and snuggle” anymore, the zookeeper Jenna Wingate told local reporters.

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