On October 31st, a meeting was held with the staff of the Bureau of Cultural Heritage, Ministry of Culture in Taiwan, with the following participants: Section Chief Lin, Hung-Lung Commissioner Li, Shih-Ting Senior Clerk Huang, Chien-Ta Li-Shu Chen, D...

Last Saturday, Dr. Hakan Oniz, Director of the Cultural Heritage Commission of the CMAS Scientific Committee, was awarded a prize by the Italian Ministry of Culture for his contributions to underwater archaeology. He had the opportunity to present hi...

Seifeddine Bali, nominated for the Fatima Bint Mubarak Women Sports Award thanks to his dedication to developing women's Finswimming in Tunisia Recognised by the Tunisian National Olympic Committee, coach Seifeddine Bali has been nominated for the pr...

From October 28 to 30, 2025, the International Workshop on Building the Asian CoralWatch Coral Reef Ambassador Hub was held at the Marine Affairs Research Center, National Kaohsiung University of Science and Technology (NKUST), in collaboration with ...

Official Statement The World Confederation of Underwater Activities (CMAS) actively participated in Seawilding 2025, an event that brought together prominent international researchers and specialists in marine conservation and ecosystem restoration, ...

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 ...

🌐 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...

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...