Use WASD and don't touch the ocean or shark. You are the blue square. The platforms move, but you don't move with them. Be warned, it's pretty hard. After 30 seconds a second shark appears and after 1 minute the platforms start moving vertically instead of horizontally. This is a work in progress. I will be adding more. This will be laggy on slow computers.
all code is by me. credits to flynn2019pw for the shark sprite and -MarzBarz- for the ocean