They know the waters and know the way, so even if you’re a star at navigating, following a guide has its perks. In addition, you are not allowed to dive everywhere alone with your buddy. On some trips it is mandatory to dive with a guide due to strong currents or navigation difficulties. If you prefer to dive without a guide, ask in advance so that you are not faced with surprises. If you dive with the guide and you pass him or her, it means that you no longer follow the guide.