Oceans

The importance of the oceans to life on Earth cannot be overstated. Liquid water covers more than 70% of our planet''s surface and, in past geological time, has spread over 85%. Life on Earth began in the oceans over 3.5 billion years ago and remained there for the great majority of that time. Today the seas still provide 99% of habitable living space, the largest repository of biomass, and holds ...