A 27-year-old Japanese visitor died Tuesday after he became unresponsive while scuba diving off south Oahu.
The Honolulu Medical Examiner’s Office identified the man as Tatsumi Umemura, of Nagoya, Japan.
His cause of death is pending the results of an autopsy.
Umemura was on a scuba diving expedition about 10 a.m. when the boat crew noticed he was unresponsive in the water, an Emergency Medical Services spokeswoman said. The crew pulled him back on board and performed CPR on him until paramedics took over treatment at Kewalo Basin Harbor.
Paramedics transported the man to a hospital in critical condition, and he later died.