Experience

DEEP

• United Kingdom
• Research Services
• 1 - 100 Employee

• Human Diver Performance Lead

  • Apr 2023 - Present

  Deep is an international research and development organisation engineering new technologies which will improve understanding and preservation of the planet’s deep water environments. Over 80% of our planet’s oceans remain almost completely unknown, unobserved and unexplored. Yet marine ecosystems hold undiscovered solutions to many of the greatest problems facing humanity - including climate change, biodiversity loss and human health. At Deep, our mission is to radically open up access to the oceans by pioneering technologies which enable humans to operate for longer periods of time underwater. By changing the way humans can interact with the oceans, we will revolutionise humanity’s ability to understand and protect them. Show less



Avatar Sequels

• Marine Unit Trainer & Consultant

  • Apr 2017 - Present

  I train, safety and support cast and crew in breath-hold / freediving while supporting stunts and consulting with director James Cameron I train, safety and support cast and crew in breath-hold / freediving while supporting stunts and consulting with director James Cameron



The Liminal Collective

• United States
• Strategic Management Services
• 1 - 100 Employee

• Performance Advisor

  • May 2021 - Present



Performance Freediving International

• Spectator Sports
• 1 - 100 Employee

• Founder / President

  • Jan 2000 - Present

  PFI offers recreational, professional, and skill development courses to fit all freediving abilities, goals, and needs. Whether you have no water experience or decades of it, we guarantee that taking a PFI course will make you a more efficient, and more confident diver. PFI has instructors all over the world but maintains the highest standards for divers and professionals, that’s why you see so many world records and active freedivers with PFI certifications. As our list of instructors grows internationally, rest assured that you’re working with instructors of the highest caliber who adhere to the strictest industry training standards and methods. We strongly believe in what we educate, ensuring all of our instructors have routine check-ins and are actively participating in ways to further their safety education. PFI’s training philosophy and goals are summed up in its original motto: Safety Through Education. A diver with safety in mind is a good diver–with safety at the forefront, you can truly enjoy the amazing experiences and challenges that freediving brings into your life. Show less



Performance Freediving Academy

• Campbell River, British Columbia, Canada

• Founder / President

  • Jul 2019 - Present

  What do the following have in common? US Naval Special Warefare Group and US Special Forces Red Bull extreme athletes Big wave surfers Tom Cruise David Blaine Margot Robbie Kate Winslet Sigorney Weaver James Cameron When they needed the world’s best freediving instruction, they made one call. This call was to Kirk Krack, founder of Performance Freediving International (PFI) and president/CEO of Performance Freediving Academy (PFA). When you won’t settle for anything but the best, you have only one choice: Kirk and his team of first-rate professionals. Experience matters. Since PFI’s formation in 2000, PFI instructors have taught over 10,000 people just like you to freedive safer, longer, and deeper. Whether you’re new to freediving or you’re an experienced water enthusiast, we are the only source you need for freediver courses, instructor certification, elite specialized training, and competition events. We are on a single-minded mission to give you the most cutting edge scientific and training information coming out of the sport today. Performance Freediving Academy is here to create your personalized freediving experience. We believe in quality over quantity. Grabbing the biggest market-share of the industry has never interested us. That’s why our instructor certifications are uncompromising and our rigorous safety standards and protocols continue to evolve with one thing in mind: your well-being. When you feel safe in the water, you’ll be blown away by what you can achieve. The PFA dive mindset gets results. Kirk has trained eight athletes who have set 24 world records. Dozens of others have set hundreds of national records. But freediving is more than competition. It’s a journey inward to see what you’re made of, to discover the potential inside yourself and infuse it into your whole life, both in and out of the water. Show less