Dreaming that you are snorkeling, can be interpreted as symbolism of personality exploration. Snorkeling indicates your desire to understand the source of your emotions. You are exploring your feelings and by this exploration you are trying to understand why do you feel such emotions about certain things. Alternatively, snorkeling in the dream denotes your past experiences. Maybe you should look back at past feelings to understand better your current mental state. See what you can learn from those experiences.