Yasemin Dalkılıç (born 2 May 1979, Ankara) is a Turkish national athlete who has set numerous world records in the discipline of freediving. Throughout her career she has broken a total of eight world records across various freediving categories and has led the international development of technical standards training methodologies and underwater safety protocols.

Early Life and Academic Background

Dalkılıç was born on 2 May 1979 in Ankara. Although she grew up in a geography far from the sea her interest in the underwater world began at an early age through documentaries she watched. She began her professional athletic career at age 11 with swimming and at age 14 was selected for the Monofin National Team where she broke numerous Turkish records in the discipline. She pursued her academic education in the Department of Mathematics at Middle East Technical University (METU) and effectively applied her analytical skills to the design of her training programs.

Yasemin Dalkılıç (AA)

Professional Career and World Records

Dalkılıç’s international rise in freediving began with her victory in the women’s category at the 1st World Freediving Championship held in Italy in 1998. Following this achievement she entered a professional collaboration with coach Rudi Castineyra and embarked on a systematic preparation process.

Her key records in chronological order are as follows:

• 7 November 1999: She set her first world record in Bodrum by diving 68 metres in the Fixed Weight with Equipment category.
• July 2000: She became the first woman to reach depths of 96 metres and then 100 metres in the Limited Variable Weight category in Bodrum.
• 23 July 2000: She reached a depth of 120 metres in the Unlimited Variable Weight category earning the title of “the deepest diving woman in the world” at that time.
• 2001–2004 Period: She broke world records in Egypt with 105 metres in the Limited Variable Weight category in Kos Island with 40 metres in the No Equipment Fixed Weight category and in Kaş with 46 metres in the same category.
• 22 April 2010: She concluded her active record attempts with a 106-metre dive in Kaş.

Yasemin Dalkılıç 105m Limited Variable Weight Dive (Yasemin Dalkılıç)

Training Methodology and Safety Protocols

Dalkılıç’s achievements were supported by a physiology-based training system. Methods posing critical risks such as hyperventilation were rejected in favor of slow and deep breathing techniques. The training process consists of three main phases: general conditioning sport-specific strength training and pressure adaptation. Additionally a recovery protocol involving inhalation of pure oxygen (O₂) at a depth of five metres was applied after dives.

Media Art and Social Responsibility

Dalkılıç played a pioneering role in establishing collaboration between freediving and the media. Her records were the first in the world to be broadcast live from depth to surface and featured on channels such as Eurosport National Geographic and Discovery Channel. In later years of her career she emerged as an environmental advocate and produced a six-part documentary series titled “Incredible Dives of the World” aiming to raise awareness about ocean pollution and the destruction of coral reefs. She is also active in music composition for underwater productions and computer programming.

Personal Life

Dalkılıç married her coach Rudi Castineyra in 2003 and is the mother of two children. After overcoming a serious health issue pancreatic tumor during her professional career she successfully completed treatment and returned to sports and her projects.