Not at all! Snorkeling can be physically demanding, but most anyone can do it. You’ll want to be a fairly proficient swimmer, so if you don’t know how to swim, it’s best to learn how before you go snorkeling. Other than that, snorkeling can be rather easy and relaxing. It’s always a good idea to check water conditions before going out for a snorkel since choppy waters and heavy currents can make snorkeling more difficult, even with the proper snorkel gear.