1. The oceans cover 140 million square miles. Can you guess what percent of the Earth's surface this is?
Seventy percent.

2. See if you can fathom this one: Which ocean has the deepest point?
The Pacific Ocean.

3. The highest tides on Earth would:
Come up as high as the fourth-floor of your apartment building.

4. The underwater mountain range called the "Mid-Ocean Ridge" has what distinction?
It circles the entire globe.

5. Did you know that there are underwater volcanoes? Guess how much of the Earth's volcanic activity happens in the oceans.
Ninety percent.