Avoid the shark. The Fish will follow your mouse. Spam the space bar to go faster. If you touch the shark, you lose health, and if you run out of health, you lose. Press 1 to make the variables disappear and 2 to make them reappear. Post your score in the comments, if you feel inclined to do so. Can you get a world record? There also items you can pick up by moving the fish to them: Present: adds to your score Bubble: lowers the shark's speed Heart: replenishes health
All the credit goes to Elivinandsparkles