Test Subject #5123: Fish Out of Water

If you are having trouble with the third room, please scroll down to see the solutions! Also, the first screenshot shows how to start it. You are Test Subject #5123 in a laboratory, a cross between a fish and a human (though more fish than human), but when you leave your container, you slowly shrink when not placed in water! You'll need to solve puzzles that require you to use your size to your a…