The History of Callan Swim School Our Pacific Beach location opened in 1975. By that point, Murray Callan had been teaching swim lessons throughout southern California for over 20 years. Throughout the years, we have taught several hundred thousand San Diego children how to swim. Many people who swam here as children are now adults and bringing their own children and grandchildren in for swim lessons. Murray Callan began swimming at a young age and began teaching swimming when he was 18 (see “Family Biographies“). When he opened his own facility, he began training instructors on his patented methodology, the Murray Callan Soft-Touch, No-Fear Technique. Since then, his children and grandchildren have kept the business alive by teaching students, training instructors and maintaining the quality of instruction at both facilities on a daily basis.