Mason County Coroner Wes Stockwell identified the dead diver as Joshua Michael Parke, 36, from The Dalles, Oregon.
Stockwell said that Parke had been on a training dive. After surfacing with his dive partner Parke went unconscious. Two divers pulled him to shore where CPR was administered. He was declared dead at the scene.
An autopsy will be performed Monday.
The Mason County Sheriff is investigating.