READ BEFORE USING THIS PROJECT! Click the green flag. Press space. Type in how much commotion you want in the water. Don't type in any value greater than 30 or less than 0. If you do, an error message will pop up.
This is NOT random. There is actually a formula to this. Click see inside and you'll see the formula somewhere in the code. Have fun with this! This is a typical pattern I see in water, unless my eyes fool me.... :-)