Snorkeling

snorkellingsnorkelsnorkelerssnorkelersnorkelssnorkellersnorkellersbreathing tubebreathing tubessnorkel and mouth guard
Snorkeling (British and Commonwealth English spelling: snorkelling) is the practice of swimming on or through a body of water while equipped with a diving mask, a shaped breathing tube called a snorkel, and usually swimfins.wikipedia
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Diving mask

maskmasksDiving masks
Snorkeling (British and Commonwealth English spelling: snorkelling) is the practice of swimming on or through a body of water while equipped with a diving mask, a shaped breathing tube called a snorkel, and usually swimfins.
A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including scuba divers, free-divers, and snorkelers, to see clearly underwater.

Underwater sports

underwater sportsportingSubaquatics
It is the basis of the two surface disciplines of the underwater sport of finswimming. The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment.
Underwater sports is a group of competitive sports using one or a combination of the following underwater diving techniques - breath-hold, snorkelling or scuba including the use of equipment such as diving masks and fins.

Scuba diving

scubascuba diverscuba divers
The primary appeal is the opportunity to observe underwater life in a natural setting without the complicated equipment and training required for scuba diving.
Some scuba divers use a snorkel when swimming on the surface.

Finswimming

fin swimmingfinswimmerfinswimmers
It is the basis of the two surface disciplines of the underwater sport of finswimming. The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment.
This reflects the sport’s origins in the underwater diving techniques of snorkelling, breath-hold diving and open circuit scuba diving.

Underwater hockey

OctopushOctopush / underwater hockeyunderwater
Snorkeling is also used by scuba divers when on the surface, in underwater sports such as underwater hockey and underwater rugby, and as part of water-based searches conducted by search and rescue teams. The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment.
1. snorkel and mouth guard 2.

Swimfin

finsswimfinsswim fins
Snorkeling (British and Commonwealth English spelling: snorkelling) is the practice of swimming on or through a body of water while equipped with a diving mask, a shaped breathing tube called a snorkel, and usually swimfins.
Swimfins, swim fins, fins or flippers are finlike accessories worn on the feet, legs or hands and made from rubber, plastic, carbon fiber or combinations of these materials, to aid movement through the water in water sports activities such as swimming, bodyboarding, bodysurfing, float-tube fishing, kneeboarding, riverboarding, scuba diving, snorkeling, spearfishing, underwater hockey, underwater rugby and various other types of underwater diving.

Spearfishing

spear fishingspearsspearfishermen
The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment.
Spearfishing may be done using free-diving, snorkelling, or scuba diving techniques.

Scuba set

scubascuba equipmentscuba gear
The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment.

List of water sports

water sportsAquaticswatersports
Swimfins, fins or flippers are finlike accessories worn on the feet, and usually made from rubber or plastic, to aid movement through the water in water sports activities.

Swimming

swimmerswimswimmers
Snorkeling (British and Commonwealth English spelling: snorkelling) is the practice of swimming on or through a body of water while equipped with a diving mask, a shaped breathing tube called a snorkel, and usually swimfins.

Diving regulator

demand valveregulatormouthpiece
A swimmer's snorkel is a tube bent into a shape often resembling the letter "L" or "J", fitted with a mouthpiece at the lower end and constructed of light metal, rubber or plastic.
As a result, many aqualung divers, when they were snorkeling on the surface to save air while reaching the dive site, put the loop of hoses under an arm to avoid the mouthpiece floating up causing free flow.

Aqua Lung America

US DiversAqua LungAqualung
The 1950s US Divers "Marino" hybrid comprised a single snorkel mask with eye and nose coverage and a separate snorkel for the mouth.
After U.S. Divers Company was renamed Aqua Lung America, the name U.S. Divers was retained as a trademark for Aqua Lung's line of snorkelling equipment.

Underwater photography

underwater photographerunderwater cameraunderwater photographers
Underwater photography has become more and more popular since the early 2000s, resulting in millions of pictures posted every year on various websites and social media.
It is usually done while scuba diving, but can be done while diving on surface supply, snorkeling, swimming, from a submersible or remotely operated underwater vehicle, or from automated cameras lowered from the surface.

Hypercapnia

carbon dioxide poisoninghypercarbiacarbon dioxide retention
When the user takes in a fresh breath, some of the previously exhaled air which remains in the snorkel is inhaled again, reducing the amount of fresh air in the inhaled volume, and increasing the risk of a buildup of carbon dioxide in the blood, which can result in hypercapnia.

Underwater rugby

Snorkeling is also used by scuba divers when on the surface, in underwater sports such as underwater hockey and underwater rugby, and as part of water-based searches conducted by search and rescue teams. The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment.

Freediving

free-divingfreediverfree-diver
The integrated version is only suitable for surface snorkeling, while the separate device may also be used for underwater activities such as spearfishing, freediving, finswimming, underwater hockey, underwater rugby and for surface breathing with scuba equipment. If necessary the snorkeller may wear a weightbelt to facilitate freediving, or an inflatable snorkelling vest, a form of buoyancy aid, for safety. Snorkelers may progress to free-diving or recreational scuba diving, which should be preceded by at least some training from a dive instructor or experienced free-diver.
Examples of freediving activities are: traditional fishing techniques, competitive and non-competitive freediving, competitive and non-competitive spearfishing and freediving photography, synchronised swimming, underwater football, underwater rugby, underwater hockey, underwater target shooting and snorkeling.

Recreational diving

recreational diversrecreationalrecreational scuba diving
Snorkelers may progress to free-diving or recreational scuba diving, which should be preceded by at least some training from a dive instructor or experienced free-diver.
Recreational scuba diving grew out of related activities such as Snorkeling and underwater hunting.

Bog snorkelling

bog snorkelBog snorkeling
Competitors must wear snorkels and flippers and complete the course without using conventional swimming strokes, relying on flipper power alone.

Rash guard

rashguardrash guardsrash vest
Environmental protection against cold, sunburn and marine stings and scratches is also regionally popular, and may be in the form of a wetsuit, diving skins, or rash vest.
A rash guard by itself is used for light coverage in warm to extreme summer temperatures for several watersports including surfing, canoe polo, water survival training, scuba diving, snorkeling, freediving, wakeboarding, bodysurfing, bodyboarding, windsurfing, kitesurfing, kayaking, stand up paddle surfing, or swimming.

Sump

oil pansump pitoil sump
Some snorkels have a sump at the lowest point to allow a small volume of water to remain in the snorkel without being inhaled when the snorkeler breathes.
A diving snorkel can have a sump section located below the mouthpiece.

American and British English spelling differences

spelling differencesorsee spelling differences
Snorkeling (British and Commonwealth English spelling: snorkelling) is the practice of swimming on or through a body of water while equipped with a diving mask, a shaped breathing tube called a snorkel, and usually swimfins.

Recreation

recreationalrecreational activitiesrecreation center
Snorkeling is a popular recreational activity, particularly at tropical resort locations.

Tropics

tropicaltropictropical zone
Snorkeling is a popular recreational activity, particularly at tropical resort locations.

Resort

resortsholiday resorttourist resort
Snorkeling is a popular recreational activity, particularly at tropical resort locations.

Marine biology

marinemarine biologistmarine life
The primary appeal is the opportunity to observe underwater life in a natural setting without the complicated equipment and training required for scuba diving.