1. The ocean covers more than 70% of Earth’s surface.
2. There are five main oceans: Pacific, Atlantic, Indian, Southern, and Arctic.
3. Blue whales are the biggest animals in the world and live in the ocean.
4. Coral reefs are made by tiny animals called polyps.
5. Some sea creatures glow in the dark using bioluminescence.
6. Octopuses have three hearts and can change color.
7. The Great Barrier Reef is the largest coral reef on Earth.
8. Jellyfish have no brain but can still move and sting.
9. Sea turtles travel long distances across the ocean.
10. The Mariana Trench is the deepest part of the ocean.
