Earth is a closed system, meaning it rarely loses or gains additional substances. And the water that was on Earth millions of years ago is still preserved to this day.
70% of the Earth's surface is covered by water, with only 1% of this liquid being suitable for consumption.
46% of all water on Earth is found in the Pacific Ocean, 23.9% in the Atlantic, 20.3% in the Indian, and 3.7% in the Arctic Ocean.
Sea water freezes at a temperature of -1.91°C.