Dan Orr has been a diver for nearly 50 years and a dive professional for over 40 years.

Throughout the years, Orr has been involved in many facets of recreational, commercial, scientific and military diving.

He has worked and taught recreational diving in a retail store, developed and implemented course curricula in the university/academic environment, supervised research efforts in the field of scientific diving, tested diving equipment for military contractors and served on the boards of various nonprofit organizations.