Jeffrey Bozanic, based in California, has done plenty of amazing things for the world of diving and his experiences include leading or participating in over 60 diving expeditions over the past 40 years. Jeff was named the Diver of the Year (Science) for Beneath the Sea in 2018. Bozanic is a prolific author, he’s published extensively on diving education topics, with a strong emphasis on cave and rebreather diving, he’s a co-author of the Antarctic Scientific Diving Manual, and he also wrote the book on how to use a rebreather called Mastering Rebreathers that has been used by countless students and dive instructors alike.