Ocean Carlos Serrao Saline water covers approximately 360,000,000 km2 (140,000,000 sq mi) and is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of Earth's surface and 90% of the Earth's biosphere. Journal · 09 · 06+♥ 382 Last update at 06 · 09 · by milo ‧‧‧ One of 7755Ocean More in OceanMore in Photography Home Ocean > Photography Carlos Serrao PIFTW