Some is but you can not tell just never drink something you dont know
swim in itmake an salt water aquarium drink itput in in an aquarium
No, ocean water is salt water. Fresh water would be found in ponds, lakes, or rivers.
Brackish water is a mix of salt and fresh water so of course there is fresh water in brackish water.
The water must be heated to drive the pure water off as water vapor and leave the salts behind. This process is called "distillation". Another process is reverse osmosis filtration through a series...