The Honolulu medical examiner has identified the woman's body found near Yokohama Bay as 29-year-old Ivanice J. Harris, a visitor from Portland, Ore.
The cause of death has been deferred pending further investigation.
Harris' body was found naked Monday night just after 6:30 p.m.
Harris was last seen Wednesday in Waikiki. Her two friends and and boyfriend of 8 years flew to Hawaii for her birthday.
She disappeared after what was supposed to be a night out with her friends.
Harris' friends say she went to the bar Kelley O'Neil's on Lewers Street in Waikiki.
When they were pulling up in a cab, they saw Harris standing across the street in front of the bar. They got out of the cab and looked back over and she was gone.
Police are investigating Harris' death.