An estimated half a million cubic kilometres of freshwater has been found far out to sea, beneath the seafloor.
Scientists have found that low-saline water aquifers are quite common under seabeds, caused by ice caps melting over 20,000 years ago.
The study suggests the reserves could be converted into drinking water to support us in future water crises. But further research needs to ensure the water is accessed and used sustainably.
Read more at Flinders University