**5 short, engaging sea facts**
Here are **5 short, engaging sea facts**
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1. **The ocean covers over 70% of Earth’s surface**, making it the planet’s largest ecosystem and a major driver of global weather patterns.
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2. **More than 80% of the ocean remains unexplored**, meaning we know more about the surface of the Moon than what lies beneath our seas.
3. **The sea produces over half of the oxygen we breathe**, thanks to tiny marine plants called phytoplankton.
4. **The deepest part of the ocean is the Mariana Trench**, which is deeper than Mount Everest is tall.
5. **Seawater is constantly moving**, creating waves, tides, and currents that help regulate Earth’s climate and support marine life.