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Stock Photo: Dolphin In The Sea . Blue Water . There Are Five Dolphin & Above .
ID 156804665 © Wwwsaienterprise269 | Megapixl.com
Dolphins are known for being smart, playful creatures that can learn to perform impressive tricks. But you might not know that dolphins are also champion nappers who have helped the U.S. Navy protect nuclear warheads. Here are 15 facts about the cute, friendly cetaceans. 1. DOLPHINS ARE EXCELLENT NAPPERS. Since dolphins can't breathe underwater, they need to swim up to the ocean's surface to get air. So how do they sleep without drowning? Essentially, dolphins are champion power nappers. Rather than sleep for several hours at a time, they rest one hemisphere of their brain for 15 to 20 minutes at a time, and they take these "naps" several times each day. By resting one hemisphere of their brain at a time, dolphins can continue swimming, breathing, and watching for predatorsdolphin in the sea . blue water . there are more than a five dolphin
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