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The dolphin's voluntary breathing
The dolphin is a mythical mammal. During the day, the dolphin swims and hunts its prey. It mainly feeds on small fish. Very regularly, he must remember to come up to the surface of the water to breathe. This is why the dolphin never sleeps completely in a day: when one part of its brain rests, the other continues to function. Photo credit: Yann Hubert / The Explorers
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