31 Awesome Dolphin Facts

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1. Dolphins look like fish but they are really mammals.
2. Dolphins sleep with one eye open.
3. Unlike any other mammals, dolphin babies are born tail first.
4. Every dolphin has its own signature whistle to distinguish it from other dolphins, much like a human fingerprint.
5. Dolphins give names to each other.
6. Dolphins sleep with one half of the brain at a time and one eye closed.
7. Dolphins sleep with one eye open!
8. Dolphins sometimes use decapitated fish to masturbate.
9. Dolphins sleep with one half of the brain at a time, and with one eye closed
10. Dolphins have been observed harassing animals, for example, by dragging birds underwater without showing any intent to eat them.
11. The smallest species of dolphin, the vaquita, is only four feet long and lives only in the Sea of Cortez.
12. Dolphins that are tagged by scientists swim 11 percent slower because of the drag from the object on their bodies.
13. Dolphins can jump up to 20 feet above water.
14. Some dolphins can hold their breath under water for as long as 30 minutes.
15. Male dolphins will sometimes flaunt their authority by forcefully raping other male dolphins.
16. In Jurassic Park, Dolphin screams, walruses bellowing, geese hissing, an African crane's mating call were mixed to formulate raptor sounds.

17. Like a bat, dolphins use echolocation to navigate and hunt, bouncing high-pitched sounds off of objects, and listening for the echoes.
18. Humans and dolphins are the only species that have sex for pleasure.
19. Dolphins deliberately get high off of pufferfish toxins.
20. Dolphins will sometimes try to rescue people who are drowning.
21. Dolphins sleep in a semi-alert state by resting one side of their brain at a time.
22. A dolphin's flipper has five digits and nearly the same bone structure as a human arm and hand.
23. Dolphins nap with one eye open.
24. Dolphins masturbate.
25. Cuban children with special needs can attend dolphin-assisted therapy at the National Aquarium in Havana.
26. Dolphins shut down their brain one hemisphere at a time, so that they can always sleep with one eye open.
27. An adult dolphin can consume 30 pounds of fish or more in a single day.
28. In the wild, dolphins can live to the age of 50.
29. Dolphins swallow fish whole, despite having 100 teeth in their mouths.
30. Dolphins communicate in several forms through whistles, clicks and sounds.
31. Dolphins are the only animals besides humans that call each other by name.

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