I could probably search and find this out but I am too lazy. I have been on 4 HAL cruises but have never gone in a swimming pool. I am not a pool person nor is my wife so I never wondered about this.

Is the water in the pool fresh water or salt water or salt water that was converted to fresh water? Is it heated?

The reason I ask is I am taking,,,ready for this,,a Carnival cruise. I won't go into detail by the main three reasons are price, port (It's 20 minutes from my house) and I am introducing a friend to cruise life (this is only a 4 nighter). My friend and his wife will want to be in the pool on sea day and on CCL ships it's salt water that is not heated, heated but the sun. So I was curious about HAL.