Sheck Exley, Date of Birth, Date of Death

Sheck Exley

American cave diver

Date of Birth: 01-Apr-1949

Date of Death: 06-Apr-1994

Profession: teacher, explorer, cave diver

Nationality: United States

Zodiac Sign: Aries

Sheck Exley (April 1, 1949 – April 6, 1994) 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 1,080-foot (330 m) deep, Zacatón, a fresh water cenote.In the book, Diving into Darkness (a story about Dave Shaw and Don Shirley), the author comments: "Exley's status in the sport is almost impossible to overstate".