Crowley (known to his mum as Mark) began diving in 2000 in Sharm El Sheikh, before quitting a 10-year IT career and moving to Thailand to take his PADI IDC in 2005. He moved from Thailand to Australia and Curacao before returning to Sharm in 2009. He managed a Nusa Lembongan dive centre between 2013-14 before hanging up his instructor boots and returning to the UK. Crowley started writing a regular column for DIVE in 2010, and now looks after DIVE’s daily online content and writes regular features for the print magazine. In his spare time, Crowley’s a dedicated gamer, devoted biker, and door-opening expert for two cats.