Snorkeling is a popular recreational activity, particularly at tropical resort locations. The primary appeal is the opportunity to observe underwater life in a natural setting without the complicated equipment and training required for scuba diving. It appeals to all ages because of how little effort there is, and without the exhaled bubbles of scuba-diving equipment.Snorkelling is normally done in shallow waters (normally 2 -3 meters), you don't need Oxygen equipment and a specialized wear. You inhale oxygen through a pipe attached to a mask. It also requires very less preparations.Snorkeling is all about floating and it's a kind of trailer of Scuba Diving.