Q:Read the bio below and try to give details on sheck exley 's: - known for - death date - birth date - name - nationality - death place - occupation Bio: sheck exley -lrb- april 1 , 1949 -- april 6 , 1994 -rrb- was an american cave diver . he is widely regarded as one of the pioneers of cave diving , and he wrote two major books on the subject : '' basic cave diving : a blueprint for survival '' and '' caverns measureless to man '' . on february 6 , 1974 , exley became the first chairman of the cave diving section of the national speleological society . during his career , he established many of the basic safety procedures used in cave and overhead diving today . exley was also a pioneer of extreme deep scuba diving . for purposes of rescue during cave diving , exley helped standardize the usage of the '' octopus '' , a redundant second stage diving regulator that can be used as a backup in the event the diver 's primary second stage fails , or alternatively , to allow the diver and his buddy to have simultaneous access to the diver 's gas if the buddy has an out-of-gas emergency . the octopus is now considered an essential piece of equipment among virtually all scuba divers , whether caving or in open water . he died at age 45 while trying to set a depth record by diving the world 's deepest sinkhole , mexico 's deep , zacaton , a fresh water cenote . -rrb- in the book , '' diving into darkness '' -lrb- a story about dave shaw and don shirley -rrb- , the author comments : '' exley 's status in the sport is almost impossible to overstate '' .
A:
- known for is cave diving pioneer- death date is 6 april 1994- birth date is 1 april 1949- name is sheck exley- nationality is united states- death place is el zacaton , tamaulipas , mexico- occupation is automobile dealer / high school math teacher