A dream of seeing something or someone in a bubble means that you view that person or object as extremely fragile, susceptible to being easily broken. Alternatively, you may be interested in keeping that person or object safe in your waking life.
Being within a bubble in a dream indicates an internal fear that you are weak and vulnerable.
Dreaming of the kind of bubbles a child would blow symbolizes fantasy and imagination. Your subconscious mind is trying to tell you to be more creative and look at things from a different perspective.