This week, Peter Ravella and Tyler Buckingham speak with Dr. Aaron Micallef about the science behind Offshore Freshened Groundwater. Aaron is a marine geologist investigating the geomorphology of continental margins. He uses quantitative techniques to analyse geophysical and sedimentological data to solve problems related to submarine mass movements, canyons and gullies, fluid flow processes, submerged landscapes and seafloor mapping.Offshore freshened groundwater (OFG) is water stored in pores of sediments and fractures of rocks in the sub‐seafloor and with a total dissolved solid concentration below that of seawater. OFG was first documented 60 years ago off Florida's West coast. Today, groundwater resources in coastal regions are facing enormous pressure caused by population growth and climate change. Will coastal communities use OFG for their water supply needs in the future? We explore the science on this show, only on ASPN!