A dream that you are floating, whether in the water or in the air, can mean that you have been under a lot of stress, and that you need to relax. You need to let go of some of your responsibilities and let other people take care of things for you.
Floating in a dream can mean that you wish to let go of some of your inhibitions.
If you dream that you are floating, you might need to take more responsibility for your future. Your dream could be telling you that you are being too passive. You need to take more control over your life.
A dream that you are floating can be a sign that you are too indecisive. You should make your own decisions and stop allowing other people to make your decisions for you.
A dream that you are floating in the air can have a similar meaning to a dream about flying. It can mean that you are feeling trapped or unable to express yourself.
Dreams about floating can have sexual connotations.