Sea Muncher

You've been sprinkled with the top-secret magic dust that was just discovered, and have shrunk to the size of a thumbtack. You've been implanted, along with a homing device, in a tiny air bubble...in the gill of a small salt water fish. You must reach the foreighn shore undetected and alive. Watch out for those huge killer sharks. You must survive and outwit the hazard-filled ocean.