| A dolphin's flipper has five digits and nearly the same bone structure as a human arm and hand. |
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| An adult dolphin can consume 30 pounds of fish or more in a single day. |
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| Dolphins can jump up to 20 feet above water. |
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| Dolphins communicate in several forms through whistles, clicks and sounds. |
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| Dolphins look like fish but they are really mammals. |
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| Dolphins nap with one eye open. |
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| Dolphins sleep in a semi-alert state by resting one side of their brain at a time. |
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| Dolphins sleep with one eye open! |
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| Dolphins swallow fish whole, despite having 100 teeth in their mouths. |
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| Every dolphin has its own signature whistle to distinguish it from other dolphins, much like a human fingerprint. |
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| Humans and dolphins are the only species that have sex for pleasure. |
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| In the wild, dolphins can live to the age of 50. |
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| Like a bat, dolphins use echolocation to navigate and hunt, bouncing high-pitched sounds off of objects, and listening for the echoes. |
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| Some dolphins can hold their breath under water for as long as 30 minutes. |
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| The smallest species of dolphin, the vaquita, is only four feet long and lives only in the Sea of Cortez. |
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| Unlike any other mammals, dolphin babies are born tail first. |
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