Krzysztof Starnawski was born in 1968 in Warsaw, TOPR lifesaver, traveler, constructor, speleologist and cave diver, leader of the team that has explored the deepest submerged cave in the world (Hranicka Propast, Czech Republic, -404m, year 2016), world record holder in diving using closed circuit rebreather (Blue Abyss, Egypt, -283m, year 2011), world record holder in cave diving using closed circuit rebreather (Viroit Cave, Albania, -278m, year 2016). He beat a dives records using a self-constructed dualCCR. Krzysztof has more than 15 exploration dives at depth of more than 200m on his account. In addition, he climbs, sails, flies on the paraglider, but first of all Krzysztof travels around the world looking for further exploration challenges. He have dived almost everywhere, including caves of Africa, Mexico, Dominican Republic, Florida, coast of Easter Island, the Galapagos, the North Pole, the Balkans, France, Italy and many other places. Krzysztof began his adventure with the underwater world thirty years ago, and his first major achievement was the very difficult exploration of the Tatra caves.