Respuesta :
A coastal inlet or bay in which freshwater from rivers mixes with salty ocean water is called AN ESTUARY. An estuary is a partially enclosed coastal body of brackish water with one or more rivers flowing into it and with a free connection to the open sea.
ANSWER:
Estuary
EXPLANATION:
A coastal inlet or bay in which freshwater from rivers mixes with salty ocean water is called an Estuary. They are under an influence of both river and marine water characteristics that is tides and waves of marine water while deposition of sediments and flow of fresh water of a river. Estuaries are one of the most nutrient dense areas of the world.