When swimming, to go underwater you will need to hold right-click and drag your mouse down while pressing (W) to move forward. If you are using a single-button mouse, you will need to hold "CMD+click" and drag your mouse down.
When swimming, to go underwater you will need to hold right-click and drag your mouse down while pressing (W) to move forward. If you are using a single-button mouse, you will need to hold "CMD+click" and drag your mouse down.