What is left of the earth that is unexplored is approximately 140 million square miles of ocean floor.
This is equal to two and a half times the surface area of the earth’s islands and continents.
How much of the earth is unexplored?
What is left of the earth that is unexplored is approximately 140 million square miles of ocean floor.
This is equal to two and a half times the surface area of the earth’s islands and continents.