Generally, the shark symbolizes terrible enemies. If dreams you that the shark pursues or attacks you, then such dream means the future disasters and cataclysms. If in your dream sharks frolic in transparent clear water, then you risk to lose success at an opposite sex because of gossips of envious persons. To see a dead shark - to compensation of expenses and return of joyful days.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.