How do penguins survive in the summer?

If you are used to a temperature below zero, then +17 ° C may seem like real heat to you. Royal penguins are very active during long summer days, so they have to cope with a problem atypical for polar latitudes – exhausting heat!
Any effort can lead to overheating, so to carry heat, these birds lie on their stomachs and stretch their legs, which blows a cool breeze, reports the BBC.
Nestlings in their long “winter coats” are even more risky. Those individuals that are too small for swimming in open waters are floundering in the river.
And for adult penguins, there is nothing better than swimming in the cool South Ocean.