ocr: Click on the Choose depth' button, and select the depth at which you want the fish to be neutrally buoyant by clicking on the list of depths. Press the '8' key or the 'Tkey to make the fish swim upwards. Press the '2'key or the 'W'key to make the fish swim downwards. Pressing these keys starts the game, as does click- ing on the Run button. Click the Restart' button to play again.
