A snorkel is a gadget used for breathing purposes while you’re above the surface. A good example is when you’re facing downwards in the water with the mouth and the nose submerged. In many cases, snorkel may come with a rubber look plastic clip, enabling snorkel to be attached to the outside of the diving mask’s head strap. Snorkeling is simply swimming on or in the water while equipped with a diving mask, a shaped breathing tube called a snorkel, and usually swim fins. In calmer waters, a wetsuit may also be worn.