The ocean is full of surprises. Here are a few facts to share with your crew.
- The ocean covers about 71% of Earth's surface.
- More than half of the oxygen we breathe comes from tiny ocean plants called phytoplankton.
- Sea turtles have been swimming in the ocean for over 100 million years.
- The Great Barrier Reef in Australia is the largest coral reef system in the world.
- Dolphins are mammals, so they breathe air just like us.
- Most of the ocean has never been explored by people.