He grew up in the Perth suburb of
Thornlie and later on a 200 ha (500 acres) farming property in
Gidgegannup; he attended
Eastern Hills Senior High School in
Mount Helena, near Gidgegannup.[5][6] A
veterinary surgeon by profession, Challen has made notable dives in
Cocklebiddy Cave and
Pearse Resurgence.[7] In 2010 he made a record-setting 194 m (636 ft) dive while caving in New Zealand.[8] In 2020 he made a second record-setting return visit to the Pearse Resurgence (New Zealand) and extended the Australasian depth record to 245 m (804 ft) with his dive partner
Richard Harris.[9]
^"Australian Honours"(PDF). Government Notices Gazette. Canberra: Commonwealth of Australia. 24 July 2018.
ISSN0819-7105. Archived from
the original(PDF) on 24 July 2018. Retrieved 25 July 2018.
He grew up in the Perth suburb of
Thornlie and later on a 200 ha (500 acres) farming property in
Gidgegannup; he attended
Eastern Hills Senior High School in
Mount Helena, near Gidgegannup.[5][6] A
veterinary surgeon by profession, Challen has made notable dives in
Cocklebiddy Cave and
Pearse Resurgence.[7] In 2010 he made a record-setting 194 m (636 ft) dive while caving in New Zealand.[8] In 2020 he made a second record-setting return visit to the Pearse Resurgence (New Zealand) and extended the Australasian depth record to 245 m (804 ft) with his dive partner
Richard Harris.[9]
^"Australian Honours"(PDF). Government Notices Gazette. Canberra: Commonwealth of Australia. 24 July 2018.
ISSN0819-7105. Archived from
the original(PDF) on 24 July 2018. Retrieved 25 July 2018.