Mark Ellyatt is a British technical diver and instructor. He teaches

technical diving Technical diving (also referred to as tec diving or tech diving) is scuba diving that exceeds the List of diver certification organizations, agency-specified limits of recreational diving for non-Professional diver, professional purposes. Technica ...

all over the world, including the UK,

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and

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World records

Mark Ellyatt held the record for the world's deepest dive reaching in 2003 35 miles off the coast of

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with a dive lasting seven hours, beating John Bennett's previous record. Ellyatt's dive computer reading from the dive was made available. In 2003, during a previous extreme deep diving attempt Ellyatt suffered extreme

isobaric counterdiffusion In physiology, isobaric counterdiffusion (ICD) is the diffusion of different gases into and out of tissues while under a constant ambient pressure, after a change of gas composition, and the physiological effects of this phenomenon. The term inert ...

(ICD) during decompression, and only survived the dive by virtue of being helped by his support divers. ICD is a common malady in extreme deep diving, and nearly claimed the life of John Bennett in his world record setting deep dive. Don Shirley also suffered extremely serious ICD during the dive which killed Dave Shaw.

HMS ''Victoria''

Ellyatt assisted the local diver Christian Francis in discovering the wreck of the battleship HMS ''Victoria'' in 2004, 150m underwater off Tripoli,

. The wreck sits vertically on its bow, partly buried in the seabed - described as being its 'own underwater tombstone'.

Ocean Gladiator

Mark Ellyat has written about his early diving experiences and later record attempts in his book ''Ocean Gladiator'', published in 2005.

References

{{DEFAULTSORT:Ellyat, Mark Year of birth missing (living people) Living people British underwater divers Pioneering technical divers Place of birth missing (living people)