When saltwater meets and mixes with freshwater it is an estuary.
The coastal marshes are saltwater marshes.
Groundwater can be either saltwater or freshwater, depending on the location. In coastal areas, groundwater can be saltwater due to seawater intrusion. Inland areas typically have freshwater groundwater sources.
Rain water is fresh water and does not have salt. Saltwater is not fresh and does have salt.
Saltwater
Saltwater is a solution because you can get fresh water and some salt and mix it and then you get saltwater.
The fresh water.
A coastal inlet or bay where fresh water mixes with salt water is called an estuary. Estuaries are important ecosystems that support a diverse array of plant and animal species due to the mix of freshwater and saltwater conditions.
Salt water
fresh water
One common method to recover water from a saltwater solution is through distillation. Heat the saltwater to evaporate the water, leaving the salt behind. Collect and condense the water vapor to obtain fresh water.
About 97% of the earth's water is saltwater, the the remaining 3% is freshwater.
In coastal areas, saltwater intrusion can occur when there is excessive pumping of freshwater wells, reducing the pressure of the aquifer and allowing saltwater to seep in from the ocean. This can contaminate the freshwater source and make it more saline. Natural geological processes, such as the movement of underground saltwater, can also contribute to the mixing of freshwater and saltwater in wells located near the coast.