The Honolulu medical examiner has identified the man's body found in waters off Windward Oahu on Wednesday.
The man was identified as 51-year-old Domingo Claro of Wahiawa.
An autopsy is scheduled to find the cause of death.
Fire Department spokesman Capt. Terry Seelig says firefighters on personal watercraft recovered the man's body Wednesday morning after being alerted by police and the emergency services department.
The body was about a quarter-mile from the coastline of Waiahole Valley.
Seelig says local fishermen first spotted the body and notified police.