7 Mind-Blowing Facts About Dolphins You Never Knew

7. Dolphins Sleep With Only Half Of Their Brain

6. Dolphins Must Surface To Breathe

5.  There Are Dolphins In The Amazon River

4. Dolphins Do Not Have Hair

3.  A Dolphin Can Swim More Than 20mph

2.  Fishing Gear Is A Major Threat To Dolphins

1.  They’re Intelligent, Like Us

10 Most Fascinating Foods Dolphins Eat