Jim Christiansen, from California, was the 1st US National Spearfishing Championship individual in 1950. He won the National Spearfishing Championship 1st team in 1956 and 1957.
Big Jim also won the Athlete of the Year Award in 1957. He was the first US Team Coach in the Worlds in 1959, 1960 & 1961. Jim designed many spearfishing products and scuba diving gear. He was one of the early pioneers of scuba diving and one of the founders of Scubapro. Jim received distinguished service awards from the USOA and PADI.