saltwater will corrode the aluminum and metal from an engine more than freshwater will. Therefore engines used in saltwater need sacrificial anodes to be the vulnerable part, thus protecting the engine.
saltwater has salt in it, freshwater does not.
I think marine aquariums are saltwater unlike freshwater that do not have saltwater
Maybe that saltwater animal can endure hard water and freshwater animals can't.
The same as in the ocean
The fact that a saltwater ecosystem has salt in it. 'salt'water ecosystem
Freshwater mussels live in rivers, while saltwater mussels live in oceans. Even though it is mussels, it differs a lot. Freshwater mussel and saltwater mussels hunt different things, because they live in different places.
Certain freshwater fish can survive saltwater conditions; examples are black mollies, mono's and scats. All of these fish aren't truly freshwater or saltwater, they are Brackish. Brackish is between freshwater and saltwater, and so these fish are highly adaptable.
umm the salt water is used to ahving salt in its natural habitat and the fresh water is not
Salmon and steelhead are both types of fish, but the main difference is that salmon are born in freshwater, migrate to the ocean, and return to freshwater to spawn, while steelhead are a type of trout that can live in both freshwater and saltwater throughout their lives.
salmon
Fresh water.
The saltwater model outboards are manufactured using stainless steel in areas that are prone to excessive corrosion. This is an added benefit with continuous saltwater operation.