23/11/1976 100m undersea without breathing equipment
Jacques Mayol tribute
Jacques Mayol with wild dolphins
Jacques Mayol was a French free diver who was the 1st to reach 100 meters. He earned the record in Elba, Italy. During this dive, his heartbeat decreased from 60 to 27 beats/min, which is an aspect of the mammalian diving reflex that is observed in whales, seals, and dolphins.