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Mike Giles


I am a Master Scuba Instructor with over 6000 dives. I can answer questions on general diving techniques, diving education and diver training. I can offer suggestions on the use and selection of proper dive equipment, general maintenance of dive equipment as well as diving equipment repair. I can also offer suggestions on air conservation techniques and buoyancy control. As a dive shop owner for 19 years, I can offer suggestions on starting/running a dive business.

Experience in the area

I have been diving for 55 years, teaching diving for 50 years and owned a diving business for 19 years. I am a certified regulator repair technician for several different brands and a certified scuba cylinder inspector.


I am currently a member of the Professional Association of Diving Instructors (PADI), Divers Alert Network (DAN), International Resort and Retailer Association and the Better Business Bureau


Undercurrent magazine and Divers Chapbook


I am a Master Scuba Diver Trainer with 15 distinct specialty instructor ratings, Rescue Diver Instructor, Medic-First Aid Instructor and I have degrees in Chemical Engineering, Biology and Radiologic Technology.

What do you like about this subject?

Diving is my way of relaxing. I especially like the huge improvements in diving equipment over the past 50 years. Early dive gear was definitely not "user friendly" but we didn't know it at the time!!

Something interesting about this subject that others may not know:

I learned to dive during the very early days of scuba diving (early 1950's). Certifying agencies didn't exist and I learned to dive through a local dive club in south Florida. I met the late Jacques Cousteau while diving in the Florida Keys.

Something controversial or provocative about this subject

Over my 50 years of diving, I have watched the coral reefs and fish populations decline. I believe the reasons are primarily pollution runoff from land and destructive commercial fishing practices. I do not believe that global climate change is making a significant impact.

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Recent Answers from Mike Giles

2016-08-08 breathing in shore dives:

Hi Lynda,    That's an interesting question.  Based on your description, I have a couple of ideas.  Since you're physically fit and you said anxiety isn't a problem then I'll try another approach.    It's

2016-01-09 medical:

I'm very sorry to hear about your friends respiratory issues.  He's already done what I would have suggested.  Another option for your friend would be to contact Divers Alert Network (DAN).  This organization

2015-08-28 Rebreather:

Hi again, John    Sorry for the delay in answering your question but I left a message for an experienced rebreather diver and have not heard back from him regarding any regulatory requirements.    To my

2015-07-22 Rebreather:

Hi John,  First, let me apologize for the delay in answering your question.  I changed my email address and that change didn't get to the AllExperts site.  As a result, I haven't been receiving notice

2014-08-03 Pressure and health:

Hi again, Matthew,    First, let me apologize for the delay in answering your question.  I changed my email address and the AllExperts site didn't get the change so I haven't been aware that questions


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