I think it's the outback?
The term salinity refers to the amount of dissolved salts that are present in water. Sodium and chloride are the predominant ions in seawater, and the concentrations of magnesium, calcium, and sulfate ions are also substantial.
A 90 degree clockwise rotation switches the numbers in the x and y places and makes x negative, for example, the coordinate (3,4) rotates 90 degrees clockwise and becomes (4,-3), or using a formula, A (x,y) -> A' (y,-x)
It would be an estuary. I attached a picture of one if you'd like to see what it looks like :)