Police said at approximately 8.30pm Tuesday there was a disturbance at the vehicle pull-in area in front the Tiki Beach bar and restaurant on Seven Mile Beach.
Police said a 27-year-old man had received a wound to his neck. He was taken to the Cayman Islands Hospital in George Town and admitted for surgery.
A 65-year-old man has been arrested in connection with the incident. He remains in police custody while enquiries continue.
Anyone who was in the area at the time of the incident is asked to contact Detective Sergeant Dave Morrison of West Bay CID on 949-3999. Information can also be passed via the RCIPS tip-line on 949-7777 or the confidential Crime Stoppers number 800-8477(TIPS).