1. The deepest part of the ocean is called Challenger Deep, and it is within the Mariana Trench.It is said to have a depth of around 36,000 feet.<br />2. The Denmark Strait cataract, Earth's highest underwater waterfall, can be found in the Atlantic Ocean and has an 11,500-ft drop.<br />3. Point Nemo in the Pacific Ocean is farthest from any land on Earth.<br />4. Over $60 billion in sunken treasure is said to still be in oceans around the world.<br />5. There are literal "dead zones" that cannot sustain any sea life.<br />6. 70 percent of the oxygen we breathe comes frommarine plants in the oceans.<br />7. The sea has a blue tint because of orange and red wavelengths from the sun.<br />8. Oceanographers have used rubber ducks to get a better understanding of water currents.<br />9. The ocean's floor contains cables from communications companies that allow the internet to travel across the globe.<br />10. Around 80 percent of volcanic eruptions occur under water.
