Donald A HarrisonDonald A Harrison has been an avid diver since the early eighties, amassing nearly fifteen hundred dives. With almost 20 years of experience teaching PADI and NAUI, he specialized in safety, instructing courses in Dive Rescue, CPR, Medic-First Aid, ad primary and secondary assessments. As a member of DAN, he was among the first to complete their course on identifying diver maladies and recording dive profiles to contribute to a database of dive accidents. Now retired, Donald continues to dive, sharing his extensive knowledge and passion for the underwater world in his book, Diving Maladies. Read More Read Less