Free diver Sofia Gomez Uribe participated in a scientific study, submerging herself in a huge Medellin aquarium to have her body's functions tested under extreme underwater conditions.
The 26-year-old Gomez performed a series of two- and three-minute immersions in a pool on Wednesday with more than 320,000 liters (84,500 gallons) of water at Explora Park, surrounded by pirarucus (Arapaimae), carnivove arawanas (osteoglossids), cachamas (Colossoma macropomum) and bagres (catfish).
During the immersions, the free diver was subjected simultaneously to an echo cardiograph, an ultrasound, an electrocardiogram and oximetry.
The tests were designed to measure and record the physiological, electrical and acoustic operation of Gomez's heart.
Last year, the athlete set a new free dive world record when she reached a depth of 84 meters (262.3 feet) in the category of constant weight with fins.
"It was quite an experience. Obviously, I wanted to endure much longer, but these were new conditions and it was very cold, which made things more difficult," Gomez said during the presentation of the experiment.
The results of the study were released by electrical engineer Jorge Reynolds, the inventor of the first external cardiac pacemaker, and cardiologist Dagnovar Aristizabal.
The researchers performed a follow-up on Gomez to complete a broad evaluation, concluding that "she is different from other people since her capabilities are supremely different" in water.
Gomez described the experiment as "a unique experience" that allowed her to learn about her body's particular qualities.
The diver said she enjoyed interacting with fish like the pirarucu because it was "something that would be impossible in the Amazon River, where the water is muddy."
After participating in the tests in Medellin, a city in northwestern Colombia, Gomez will return to Dominica to continue training to set new records.
"My main goal this year is to reach 100 meters (328 feet) deep in the category or constant weight with fins," the free diver said. "I know I can do it."