<P> Amongst technical divers , there are divers who participate in ultra-deep diving on SCUBA below 200 metres ( 660 ft ) . This practice requires high levels of training , experience , discipline , fitness and surface support . Only twelve persons are known to have ever dived below a depth of 240 metres ( 790 ft ) on self - contained breathing apparatus recreationally . That is the same number as the number of people who walked on the moon . The Holy Grail of deep scuba diving was the 300 m ( 980 ft ) mark , first achieved by John Bennett in 2001 , and has only been achieved five times since . </P>
<P> Amongst technical divers , there are divers who participate in ultra-deep diving on SCUBA below 200 metres ( 660 ft ) . This practice requires high levels of training , experience , discipline , fitness and surface support . Only twelve persons are known to have ever dived below a depth of 240 metres ( 790 ft ) on self - contained breathing apparatus recreationally . That is the same number as the number of people who walked on the moon . The Holy Grail of deep scuba diving was the 300 m ( 980 ft ) mark , first achieved by John Bennett in 2001 , and has only been achieved five times since . </P>
how deep can man dive in the ocean
how deep can man dive in the ocean
300 m ( 980 ft )
300 m ( 980 ft )