If you saw the sea in your dream, then such dream symbolizes the two worlds you live in – unconscious and conscious mind of yours. Consider that the dream could also be the reflection of your emotions as maybe you are floating at some situation and do not put the effort to make it better. The state of the water would say much more about the dream, because for example clear water represents tranquility and clarity of your emotions and muddy or dirty water represents opacity of your feelings.
Sea dream meaning
Read more about dreaming of Sea in other dream meanings interpretations.