10 Weird Ocean Facts

The ocean holds countless surprises. Here are ten weird and wonderful facts.

1. There are underwater rivers – Dense, salty water can flow along the seafloor like a river, carving channels.
2. The majority of life is in the sea – Over 80% of all life on Earth lives in the ocean.
3. We have explored very little – Only about 5% of the world’s oceans have been explored.
4. Some fish glow – Bioluminescence helps many deep-sea creatures attract prey or mates.
5. The longest mountain range is underwater – The Mid-Ocean Ridge stretches around the globe.
6. Pressure is immense – At the deepest point, pressure is over 1,000 times that at the surface.
7. There’s gold in the sea – Tiny amounts are dissolved in seawater; extracting it is not practical.
8. Coral reefs are animals – Corals are related to jellyfish and anemones.
9. The ocean is very old – Water has been on Earth for billions of years.
10. Sound travels far – Underwater, sound can travel thousands of miles.

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