Double world champion at the recent CMAS World Championships in Marina El Alamein, Egypt, now holding eleven individual world titles ! Unbeaten since 2021 in the 3 km bi-fins events, only once in the 1km bi-fins during the same period, Clément Batte ...

1. LEGAL PUBLICATION - SANCTIONS  2. WADA RULES AND INFORMATION The World Antidoping Agency's (WADA) mission is to lead a collaborative worldwide campaign for doping-free sport. WADA works towards a vision of a world where all athletes compete i...

🌐 CMAS invites you to join the next ITA Monthly Webinar! Topic: What You Need to Know for 2026 🗓 Date: Thursday, 6 November 2025 🕑 Time: 14:00 – 15:00 CET 🎙 Panellists: ●Dr Mark Stuart – ITA Drugs, Health & Development Senior Manager and Sports P...

Triple World Champion in Open Water and a symbol of inspiration for Egyptian Finswimming Winning a gold medal at home, in front of her own supporters, made the 2025 CMAS Open Water World Championships in Marina El Alamein truly unforgettable for Nada...

Dear Presidents, dear friends, We are delighted to inform you that the forthcoming GA 2026 will take place in Bordeaux on the 15th to 19th of April. We invite you to view the attached brochure which includes all the information you will need. It is p...

We have concluded an intense week at the CMAS International Scientific Diving Course 2025, held at the UALG Scientific Diving Center in Faro, where science, diving, and training came together in an outstanding environment.We are proud to announce tha...

[Factsheet] Bühlmann's sets of parameters (ZH-L) are used in almost all dive computers.  In the literature available, there is a great deal of confusion, with the concept of a model being confused with that of parameter sets. Furthermo...

[Factsheet] The DCIEM desaturation model is the result of a programme launched in 1962 by D.J. Kidd and R.A. Stubbs, which led to the KS-1971 model (Kidd and Stubbs 1971) and was subsequently improved by Nishi and Lauckner to produce the DCIEM 1983.D...

Whereabouts Matter | ITA Webinar 📅 Wednesday 15 October | 14:00–15:00 CEST CMAS is pleased to promote the next session of the Monthly Webinar Series organised by the International Testing Agency (ITA): "Whereabouts Matter: An Athlete's Role in Protec...

Barcelona, September 24, 2025. – The International Conference SeaWilding 2025, officially recognized as an Activity of the United Nations Decade of Ocean Science for Sustainable Development, has signed a Collaboration Agreement with the World Confede...

🌐 CMAS invites you to join the next ITA Monthly webinar! Topic: Ask the Expert: Supplements Part II 🗓 Date: Thursday, 25 September 2025 🕑 Time: 14:00 – 15:00 CEST 🎙 Panellist: Jeni Pearce, MNZM, NZRD – Performance Nutritionist 🎤 Moderator: Lisa Getz ...

The Institute of Marine Sciences and Limnology (ICMyL) of the National Autonomous University of Mexico, in coordination with the Mexican Federation of Underwater Activities (FMAS) and the World Confederation of Underwater Activities (CMAS), celebrate...

[Factsheet] In addition to pure technique, you must ensure that your finning has as little impact on the environment as possible. FOUR FUNDAMENTAL RULES The diver must be well balanced (weight, lung volume control, life jacket).Diving horizontal...

[Factsheet] Reduction Factor (RF) or Gradient Factors (GF) are coefficients (e.g. 90%, 80%...) that can only be used with Haldanian sets of parameters (e.g. U.S. Navy, Bühlmann...) and that allow the M-Values to be reduced in order to increase t...

[Factsheet] Deep stops include : Stops at half the maximum depth (also known as "Pyle stops");Stops deeper than those proposed by the desaturation model, due to the setting of gradient factors (GF), in particular with a GFlow lower than GFhigh. More ...

[Factsheet] The 1908 publication established the first decompression model and the first diving tables, creating the concept of decompression stops based on the maximum depth reached and the dive time (which at the time was opposed to a slow and...

[Factsheet] Apart diver training and experience, the maximum depth for diving depends on: A physiological limit linked to the gas breathed (narcosis, hyperoxia, density, DCS); Historical-social-touristic-cultural considerations which may lead certain...

[Factsheet] The density of the gases breathed in during diving is one of the limiting factors, because of the breathing difficulties (WoB: Work of Breathing) and the accumulation of CO2 that it can cause. More information on fact-sheets section.

[Factsheet] Narcosis is 'progressive from 35 to 60 m depth when diving with air, with no threshold effect, and systematic beyond 60 m' More information on fact-sheet section.

[Factsheet] The dive computers display a reference to certification in compliance with different regulations.This does not concern the software, only the pressure, time measurement and interferences.The software is not certified; it is created u...