
WE MAY NOT HAVE GILLS, BUT WE'VE GOT THE SKILLS
WHERE BREATH TAKES YOU FURTHER
BEHIND THE MASK

Petra Oberucova
Founder
Petra is a master freediving instructor and professional safety diver, trusted in both international competitions and major wildlife documentary productions. She’s worked with scientists, filmmakers, and professional divers in some of the ocean’s most demanding environments, always bringing calm focus and safety to the forefront.
Beyond her safety work, Petra is an accomplished underwater photographer with projects for institutions such as the Museum of Natural History. She’s also known for her deep knowledge of marine behavior, especially sharks, and for guiding divers to interact with ocean life respectfully and with confidence.
Her approach is warm and personal — helping those who carry stress, fear, or blocks in the water find comfort, ease, and connection. Whether you’re a professional or taking your first steps into depth, Petra meets you where you are and supports your growth every step of the way.


Carlos Coste
Partner in Crime
Carlos is a freediving legend and 12× world record holder, with four Guinness Records to his name. He made history as the first person to dive beyond 100 meters in both Free Immersion (FIM) and Constant Weight (CWT), setting milestones that changed the sport. Over his more than 20-year career, he’s pushed the limits of freediving in competition, in extreme environments, and through personal exploration.
He isn’t just about big numbers, though. Carlos has developed his teaching to be precise, thoughtful, and deeply personal: helping divers refine equalization, master mental preparation, and bring body and mind into harmony for deeper, safer dives. He’s worked with everyone from high-level athletes to those rebuilding confidence in the water — always with attention to detail, safety, and what feels right.
Carlos also brings a strong creative side: he’s been featured in documentary projects, led expeditions, and shares his underwater world through visual storytelling. Whether you’re chasing depth, technique, or comfort in the sea, training with Carlos means working with someone who knows what it takes — and who helps you discover your own pace and path forward.













































