A total of five oceans and seven seas are recognized as of now. Still, suppose we add the smaller seas with these, such as the Barents, Beaufort, Chukchi, Kara, etc. In that case, we will have a total area of the ocean of about 361,000,000 km² which is approx 71% of the earth’s surface. In short, our hydrosphere, which comprises the ocean combined with all freshwater (in groundwater, lakes, rivers, snow, ice & atmosphere), makes up about 0.023% of the Earth's total mass.
about 10 months ago