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No-limits Apnea
No-limit apnea is a discipline of competitive freediving, also known as competitive apnea, in which the freediver descends and ascends with the method of his or her choice. Often, a heavy metal bar or "sled" grasped by the diver descends fixed to a line, reaching great depths. The most common ascension assistance is via inflatable lifting bags or vests with inflatable compartments, which allow for rapid surfacing. The dives may be performed head-first or feet-first. This form of diving is considered extremely dangerous by diving professionals. No-limit apnea has claimed the lives of several divers. In 2025 the discipline is not recognized by either AIDA or CMAS. Challenges The three main differences between free diving disciplines that involve diving to depth and those that occur at the surface are that you cannot interrupt the dive, there are periods where work is performed and the diver is impacted by direct effects of pressure. Records The current no-limit world record holde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freediving
Freediving, free-diving, free diving, breath-hold diving, or skin diving, is a mode of underwater diving that relies on breath-holding until resurfacing rather than the use of breathing apparatus such as scuba gear. Besides the limits of breath-hold, immersion in water and exposure to high ambient pressure also have physiological effects that limit the depths and duration possible in freediving. 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. There are also a range of "competitive apnea" disciplines; in which competitors attempt to attain great depths, times, or distances on a single breath. Historically, the term ''free diving'' was also used to refer to scuba diving, due to the freedom of movement compared wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AIDA International
Association Internationale pour le Développement de l'Apnée (AIDA) (English: ''International Association for the Development of Apnea'') is a worldwide rule- and record-keeping body for competitive breath holding events, also known as freediving. It sets standards for safety, comparability of Official World Record attempts and freedive education. AIDA International is the parent organization for national clubs of the same name. AIDA World Championships are periodically held. History AIDA was founded on November 2, 1992, in Nice, France, by Frenchmen Roland Specker, Loïc Leferme and Claude Chapuis, with Specker as its first president. The AIDA Competitions started to take form in 1993. National clubs begin to form over all Europe in 1994–1995. AIDA became AIDA International in 1999. * In 1999 Sébastien Nagel, of Switzerland, replaced Roland Specker as the president. * Bill Strömberg, of Sweden, replaced Sébastien Nagel as president in 2005. * Kimmo Lahtinen, of Finland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confédération Mondiale Des Activités Subaquatiques
Confédération Mondiale des Activités Subaquatiques (CMAS; known in English as the World Underwater Federation) is an international federation that represents underwater activities in underwater sport and underwater sciences, and oversees an international system of recreational snorkel and scuba diver training and recognition. Its foundation in Monaco during January 1959 makes it one of the world's oldest underwater diving organisations. Origins An international congress of diving federations representing all underwater disciplines met in Brussels on 28 September 1958. National delegates attended from following countries: Belgium, Brazil, France, the Federal Republic of Germany, Greece, Italy, Monaco, Portugal, Switzerland, the United States of America and the former Yugoslavia. Following a decision at that congress, a meeting was held in Monaco on 9–11 January 1959, which officially established the World Underwater Federation, with an acronym based on its French title ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dysbarism
Dysbarism or dysbaric disorders are medical conditions resulting from changes in ambient pressure. Various activities are associated with pressure changes. Underwater diving is a frequently cited example, but pressure changes also affect people who work in other pressurized environments (for example, caisson workers), and people who move between different altitudes. A dysbaric disorder may be acute or chronic. Ambient pressure Ambient pressure on a diver is the pressure in the water around the diver (or the air, with caisson workers etc.). It is the sum of the atmospheric pressure at the surface and hydrostatic pressure due to the depth. As a diver descends, the ambient pressure increases. At in seawater, it is twice the normal atmospheric pressure at the surface. At 40 meters (a common recommended limit for recreational diving) it is 5 times the pressure at sea level. Pressure decreases with altitude above sea level, but less dramatically. At 3000 feet altitude (almost 10 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert Nitsch
Herbert Nitsch (born 20 April 1970) is an Austrian freediver, the current freediving world record champion, and "the deepest man on earth" having dived to a depth of . Nitsch has held 34 world records in all of the eight freediving disciplines recognised by AIDA International and one in the traditional Greek discipline of Skandalopetra. Competitive freediving Nitsch has held the world record in at least six AIDA-recognised events: Variable Weight, Constant Weight, Static Apnea, Dynamic Apnea, Free Immersion and Dynamic apnea without fins. Dynamic Apnea Nitsch's Dynamic Apnea record of 183 m set in 2002, was bested by 40 m by Tom Sietas. Women's champion, Natalia Molchanova of Russia, has also swum further than 200 m. Sietas also holds the Dynamic apnea without fins record at 183 m, beating Nitsch's 2001 distance of 134 m by almost 50 m. Constant Weight Nitsch also held the world record in the Constant Weight event, which is considere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spetses
Spetses (, "Pityussa") is an island in Attica, Greece. It is counted among the Saronic Islands group. Until 1948, it was part of the old prefecture of Argolis and Corinthia Prefecture, which is now split into Argolis and Corinthia. In ancient times, it was known as Pityussa. The island is now an independent municipality, with no internal boundaries within the municipality. The town of Spetses is the only large settlement on the island. The other settlements on the island are Moní Ayíon Pánton, Ligonéri, Ágioi Anárgyroi, Kouzoúnos. Also part of the Municipality of Spetses are the islands of Spetsopoula, Falkonera, and Velopoula (all uninhabited). The municipality has an area of 27.121 km2. An unusual aspect of Spetses is that no private automobiles are allowed within the town limits. The most common modes of transport are walking, horse-drawn carriages, bicycles, mopeds, and motorcycles. Only taxis and delivery vehicles are allowed in the downtown area. Ferries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greece
Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to the east. The Aegean Sea lies to the east of the Geography of Greece, mainland, the Ionian Sea to the west, and the Sea of Crete and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin, spanning List of islands of Greece, thousands of islands and nine Geographic regions of Greece, traditional geographic regions. It has a population of over 10 million. Athens is the nation's capital and List of cities and towns in Greece, largest city, followed by Thessaloniki and Patras. Greece is considered the cradle of Western culture, Western civilisation and the birthplace of Athenian democracy, democracy, Western philosophy, Western literature, historiography, political science, major History of science in cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santorini
Santorini (, ), officially Thira (, ) or Thera, is a Greek island in the southern Aegean Sea, about southeast from the mainland. It is the largest island of a small, circular archipelago formed by the Santorini caldera. It is the southernmost member of the Cyclades group of islands, with an area of approximately and a 2021 census population of 15,480. The municipality of Santorini includes the inhabited islands of Santorini and Therasia, and the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi, Anydros, and Christiana. The total land area is . Santorini is part of the Thira regional unit. It is the most active volcanic centre in the South Aegean Volcanic Arc. The volcanic arc is approximately long and wide. The region first became volcanically active around 3–4 million years ago, though volcanism on Thera began around 2 million years ago with the extrusion of dacitic lavas from vents around Akrotiri. One of the largest volcanic eruptions in reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decompression Sickness
Decompression sickness (DCS; also called divers' disease, the bends, aerobullosis, and caisson disease) is a medical condition caused by dissolved gases emerging from Solution (chemistry), solution as bubbles inside the body tissues during Decompression (diving), decompression. DCS most commonly occurs during or soon after a decompression ascent from underwater diving, but can also result from other causes of depressurisation, such as emerging from a Caisson (engineering), caisson, decompression from Saturation diving, saturation, flying in an Cabin pressurization, unpressurised aircraft at high altitude, and extravehicular activity from spacecraft. DCS and Air embolism, arterial gas embolism are collectively referred to as decompression illness. Since bubbles can form in or migrate to any part of the body, DCS can produce many symptoms, and its effects may vary from joint pain and rashes to paralysis and death. DCS often causes air bubbles to settle in major joints like knee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
