Only the motion of the ocean can tell of the vast amount of space and volume of Water this whole planet can hold. But if you think of Global Warming and the ice caps melting, then yes you will see many places going under water.
Hinderance aside, how can we have that much water and still live. It is said that the microscopic creatures that roam the waters produce about 50% of the oxygen for our cause. This is through photosynthesis.
If life did not exist then what would happen in the known universe. Perhaps life would still evolve into beings that have the capacity to understand their surroundings.
But perhaps if we strove to look after our own ecosystem then we may live a long life as the sun will not always be here.
