It is with great sadness that we announce the passing of Bill Boyle on 27 Nov 2018 at the Toronto General Hospital after a long battle with cancer. Bill worked tirelessly behind the scenes in the diving and hyperbaric medicine community in Canada for decades. He was a member of the UHMS Great Lakes Chapter (GLC) and served on the Executive as a Member-at-Large during the final year of the GLC’s operation (2009-2010). When CC-UHMS (the Canadian Chapter of the UHMS) replaced the GLC in 2010, Bill managed member communications until CUHMA was established in 2015. Bill’s list of over 600 e-mail contacts was an indispensable tool for both CC-UHMS and later CUHMA, reaching individuals and organizations throughout the Canadian diving and hyperbaric medicine community. He served as the CC-UHMS Associates Chair from 2011-2014, and remained an active member of CUHMA until his death. Professionally, Bill served as Operations Director for Medical Oxygen Repair in Mississauga for the past 3 years; his wit and grace will be greatly missed. Outside of his involvement with diving and hyperbaric medicine, Bill was a national official for Canoe Kayak Canada and was involved with the Knights of Columbus for many years. He is survived by his wife Jo-Anne and their two children.