If you are staying at one of the famous water villas in the Maldives you're definitely going to want to take a dive at one point of your trip especially if you're staying at Dhigali, Maldives. You will require a PADI certification to dive, however. You can obtain this certification before making your trip this will probably save you a bit of money as well as allow you to get to do actual diving while you're in the Maldives. However, nearly all resorts will have a driving school and means to get you started up. There are a variety of courses which you can do for your specific requirement but if you really want to get into it you definitely need to get an open water certification.