Vast freshwater reserves found in seabed

The video explains how aquifers formed thousands of years ago and were protected from saltwater intrusion by layers of sediment and clay. Researchers discovered significant groundwater reserves, including 3.1 cubic kilometers off the coast of Gippsland, Australia, and half a million cubic kilometers worldwide. These reserves can be accessed by drilling from sea platforms, though the process is costly. The low-salt groundwater can be converted to drinking water, potentially supplying many coastal cities globally.

What natural barriers have helped protect groundwater reserves from saltwater intrusion?

• Layers of sediment and clay

• Mountains and hills

• Forests and vegetation

• Ice caps and glaciers

How far off the coast of Gippsland, Australia, was a significant groundwater reserve found?

• 60 kilometers

• 50 kilometers

• 70 kilometers

• 80 kilometers

Approximately how much groundwater was discovered worldwide?

• 500,000 cubic kilometers

• 250,000 cubic kilometers

• 100,000 cubic kilometers

• 750,000 cubic kilometers

What is a potential method for accessing offshore groundwater reserves?

• Building underwater tunnels

• Drilling from platforms at sea

• Constructing floating pipelines

• Using submarines

What is a possible use for the low-salt groundwater found offshore?

• Filling swimming pools

• Industrial cooling

• Irrigation for agriculture

• Conversion to drinking water