Snorkeling

Snorkeling or snorkelling is the practice of swimming on or through a body of water while equipped with a diving mask, a shaped tube called a snorkel, and usually fins. In cooler waters, a wetsuit may also be worn. Use of this equipment allows the snorkeler to observe underwater attractions for extended periods of time with relatively little effort.

Snorkeling is a popular recreational activity, particularly at tropical resort and scuba diving 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.

Snorkeling is also employed by scuba divers when on the surface, and search and rescue teams may snorkel as part of a water-based search. It is also a means to an end in underwater sports such as underwater hockey, underwater rugby and spearfishing.

Origins

Archeological evidence from as early as 3000 B.C. point to some of the earliest known divers; sponge farmers in Crete used hollow reeds to allow them to breathe while submerged in water. Snorkeling is also mentioned by Aristotle in his Parts of the Animals. He refers to divers using "instruments for respiration" resembling the elephant's trunk.

Prepare

Equipment

Mask - Snorkelers normally wear the same kind of mask as those worn by scuba divers. By creating an airspace, the mask enables the snorkeler to see clearly underwater. All scuba diving masks consist of the lenses also known as a faceplate, a comfortable skirt, which also encloses the nose, and a head strap. There are different styles and shapes. These range from oval shaped models to lower internal volume masks and may be made from different materials; common choices are silicone and rubber.
Snorkel - A swimmer's snorkel is a tube typically about 30 centimeters long and with an inside diameter of between 1.5 and 2.5 centimeters, usually L- or J-shaped and fitted with a mouthpiece at the lower end, and constructed of rubber or plastic. It is used for breathing air from above the water surface when the wearer's mouth and nose are submerged. The snorkel usually has a piece of rubber that attaches the snorkel to the outside of the strap of the diving mask. An older technique is pushing the snorkel between the mask-strap and the head, but this practice increases the chances the mask will leak. The optimum design length of the snorkel tube is at most 40 centimeters (about 16 inches). A longer tube would not allow breathing when snorkeling deeper, since it would place the lungs in deeper water where the surrounding water pressure is higher. The lungs would then be unable to inflate when the snorkeler inhales, because the muscles that expand the lungs are not strong enough to operate against the higher pressure
Fins - provide a large surface area to push against the water. This allows you to more easily swim using your powerful leg muscles but are not necessary to snorkel. This moves you more efficiently and frees your hands and allows the swimmer to cover larger areas faster. The majority of fins for snorkel are open heel, but there are also full foot fins available. Quick adjust buckles are a nice feature for quickly adjusting and removing the fins when getting in and out of the water.
Wetsuit may be needed if snorkeling in colder water and helps provide thermal insulation, abrasion resistance and buoyancy. but even Lycra or other ‘protective clothing’ can help protect against jellyfish and other minor scrapes and bruises. Wetsuits are generally made of foamed neoprene and come in many different lengths and sizes depending on the need for coverage.

Learn

Snorkeling requires no special training, only the ability to swim and to breathe through the snorkel. However, for safety reasons, instruction and orientation from a fellow "experienced" snorkeler, tour guide, dive shop, or equipment-rental shop could be helpful for the inexperienced. Instruction generally covers equipment usage, basic safety, what to look for, and what to look out for, and conservation instructions (fragile organisms such as coral are easily damaged by snorkelers).

Flooding and clearing

Learning to clear a snorkel takes some practice. The snorkeler expels water from the snorkel either with a sharp exhalation on return to the surface (blast clearing) or by tilting the head back shortly before reaching the surface and exhaling until reaching or breaking the surface (displacement method) and facing forward again before inhaling the next breath. The displacement method expels water by displacing its presence in the snorkel with air; it is technique that takes practice but clears the snorkel with less effort, but only works when surfacing. Clearing splash water while at the surface requires blast clearing.

Do/Stay safe