Underwater Cave Drawing
When you think caveman, an image of a primitive, hairy human ancestor pops into mind. That’s what we’re taught in public schools, after all. What you might not know is that those “primitive” beings were a lot more sophisticated than we realized. Believe it or not, they had scuba diving gear, which was what allowed them to create underwater cave paintings.
Just kidding, guys. What actually happened was an underwater archaeology professor came across a submerged cave, which had drawings made by human ancestors. After proper examination, the professors concluded that these crude drawings were actually of a mastodon.