| in Interesting Facts About Earth
80 percent of the ocean remains undiscovered.
The ocean continues to be one of the most enigmatic and perplexing things to humanity. No matter how much we learn and tell about it, there is still much more to learn and reveal since we have only explored one-fifth of it. With a total volume of 1.35 billion cubic kilometers, it is safe to assume that we have a long way to go before we can unravel the endless mysteries that this mystery may be hiding.