How much of the earth is ocean?

The ocean covers more than 70 percent of the surface of our planet. It's hard to imagine, but about 97 percent of the Earth's water can be found in our oceans. Of the tiny percentage that's not in the ocean, about two percent is frozen up in glaciers and ice caps. read more

The world ocean is the habitat of 230,000 known species, but because much of it is unexplored, the number of species that exist in the ocean is much larger, possibly over two million. The origin of Earth's oceans is unknown; oceans are thought to have formed in the Hadean eon and may have been the impetus for the emergence of life. read more

The Great Barrier Reef in Australia is the largest living organism on Earth and can be seen from the moon. 99% of the Earth’s water The ocean contains more than 96 percent of the Earth’s water. read more