The severity and the exact part of the body where the bite appears could help in deciphering the meaning of the dream. If you are a diabetic patient and saw a vision where you lost your leg to shark bite it relates to the dangers of losing your leg to diabetes which is a fact as well. It is better to take safety measures by living a healthy lifestyle to avert such mishaps.
Fighting off and surviving shark attacks
Dreaming about fighting off the attacks of sharks and surviving it signifies that you should brave the situation against you and will win it.
Catching a shark
If you see a dream where you are riding the shark or picking one, it denotes that you can handle and balance out the bad situation you are experiencing in your life at present.