Generally, these are rivers called estuaries.
it is a oasis
a fresh water pond
Amphitrite.
What is the name of south Americas largest fresh water lake im not sure what it is but that answer is WRONG!
its called an estuary :]
Chub
Largemouth Bass.
fresh water algae
Spring of fresh water
spongilla
Brackish?
The discoverer of salt water and fresh water is very contradictory. This is because there is no written document for these creatures. I believe that salt water was discovered by a lioness named Carla and fresh water was discovered by a killer whale in search of krill who's name tag read: Hi! my name is: Hung Leoh