Here's a tip: After you buy that new snorkeling or scuba-diving mask, take it to your bathroom. Push out a sliver of toothpaste -- paste, young ocean explorer, not gel -- and rub the paste with your finger on the mask's inside glass. Rinse the mask, then do it once more. That little process will take away any film on the glass and help prevent your mask from fogging up just as that barracuda darts by ten feet below your fins. That's just one tip you can get from the helpful staff at Divers Cove, a full-service shop on University Drive in Davie that has received a five-star rating from the Professional Association of Diving Instructors (PADI). Divers Cove sells everything you'll need to visit the natural paradise that exists just below the waves off the coasts of Broward and Palm Beach counties -- from buoyancy control devices on down to gloves. At Divers Cove, for roughly $30 to $80, you could be swimming off the coast of Lauderdale-by-the-Sea, new mask and snorkel in hand. The PADI-certified dive center also offers weekend and evening dive classes ranging from beginners to divemasters. Prices vary depending on times and certification. Divers Cove also works with two local charter companies to offer dive trips from Hillsboro Inlet and Port Everglades.