When I think of water, my first thought is of the water in our oceans.
The oceans cover 71 percent of the Earth’s surface and contain 97 percent of the Earth’s water. Less than 1 percent of the Earth’s water is fresh water and 2-3 percent is contained in glaciers and ice caps. The oceans contain 99 percent of the living space on the planet.
(information from the Oceanic institute)