to show people the beauty of the sea
No.
fresh water Aquariums
Sea World and I know of one in Vancouver, Canada
There is no difference in the physical aquarium itself, only what you put in it. If you go to a pet store and buy a glass or acrylic aquarium, you can use it for salt or freshwater. You may use some different equipment in it based on whether it is fresh or saltwater. For instance protein skimmers are generally used on saltwater tanks only, you use different lighting for freshwater planted aquariums versus salt water coral reef aquariums, etc. Of course the fish or invertebrates are specific to the type of water you are using as well. YOu may see some aquariums advertised as reef or saltwater, but this is just because they are a kit that comes with lighting, filtration, etc. that is suitable for saltwater.
aquariums :D
Saltwater aquariums are difficult to maintain for the average collector.
No, there are special live plants grown just for fresh water or salt water fish aquariums. There are also plastic fake plants that are made for all aquariums.
No
They swim and are popular in salt water aquariums.
no why would it
Dolomite can be used in saltwater aquariums to buffer changes in pH of the water