Groundwater flow direction into the sea, because sea water has a density greater than water and fresh groundwater, which is water on sea water and sea water pushed towards override go out.
The flow of water into the ocean, because the ocean water has a higher density than water is fresh water, the sea and fresh water on the pressure pushes the water back off.
Groundwater is the direction to flow into the sea, due to a higher density than seawater fresh water groundwater, which makes the freshwater on sea water and press push waters retreat.