1. Our oceans cover more than 70% of the Earth’s surface.
With such a large part of the Earth occupied by the ocean, it is clear how important these maritime living environments are to our planet and how much remains to be discovered.
2. Most of life on Earth is in the water.
Since a huge part of Earth’s surface is under water, it is no surprise that there are more marine animals than terrestrial species. This percentage is an incredible 94% of all animal species on Earth.
3. Less than 5% of the oceans on our planet have been explored.
According to the Ocean Service, humans have explored less than 5% of the world’s oceans. As maritime scientists strive to explore more and more of the ocean floor, we get to know our oceans better and better.
4. The world’s longest mountain range is under water.
Earth’s longest mountain range, the mid-oceanic ridge, lies almost entirely below the surface and stretches for 65,000 kilometres. It is said that this mountain range is less explored than the surface of Venus or Mars.
5. There are more historical artifacts to be seen in the sea than in any museum in the world.
There are some 1,000 shipwrecks near the Florida Keys alone, some of which fall within the Florida Keys National Marine Sanctuary. Several underwater museums have emerged in recent years, including the sunken bronze statue of Jesus in the Mediterranean called Christ of the Abyss.
6. We only know a fraction of the marine species in our oceans.
According to the World Register of Marine Species, there are currently 240,470 registered species, but this would only be a small part of the species that actually exist. Every day, new forms of life are discovered in the sea.
7. More than 70% of the oxygen on our planet is produced by the ocean.
It is thought that between 70 and 80% of the oxygen we breathe is produced by marine plants, almost all from marine algae.
8. There are rivers and lakes under water.
When salt and hydrogen sulphide converge, this water becomes denser than the surrounding water, allowing it to form a river or lake that flows beneath the surface of the water.
9. Approximately 50% of the United States is under water.
Not only is a large part of our planet below the water surface, but the United States is about 50% under water.
10. The Pacific Ocean is the largest ocean in the world and contains about 25,000 islands.
Thanks to these 25,000 islands, the Pacific Ocean has more islands than anywhere else in the world.