Officials have identified the two men visiting the islands who apparently drowned in waters off Kahala on Saturday.
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The men were 32-year-old Michael Pui and 31-year-old Steve Tran of southern California.
Honolulu fire officials say the men were diving in waters off Hunakai Street around 5 p.m. when they ran into trouble.
Another man was also diving with them, but a surfer was able to help him to shore.
The medical examiner says the cause of death has been deferred.