Fresh Water under the Ocean Floor

Photograph by Sebastian Meckelmann, from the article "10                                                        

Things You Can Do to Save the Ocean" by National Geographic.                                

              

/ Vincent Post, from Flinders University in Adelaide, has helped make a rather startling discovery: fresh water in our oceans. The water is contained in aquifers formed by regular rainfall long ago when the sea levels were lower, and were trapped underneath the ocean after the polar ice caps melted some 20,000 years ago (Post). The water is usually a mixture of seawater and fresh water (called brackish water), but Post says there are also some deposits of fresh water. Either way, purification and/or desalination would be less expensive than with typical seawater, and may prove to be a godsend for areas experiencing water scarcity. 

You can read more in the article from ABC here */