The photo shows Turner surrounded by family on a boat, holding a rose over the balcony.
Craig Turner died by suicide July 3, according to a spokesperson for the Los Angeles County Coroner's office.
"The call was reported as a suicide, gun shot wound," the spokesperson told ET at the time. "The next of kin has been notified. There will be an autopsy done and there is an investigator at the scene."
Tina Turner gave birth to Craig Turner in 1958 when she was 18. His father was Kings of Rhythm saxophonist Raymond Hill, but he was adopted by Ike Turner when he and Tina Turner married in 1962.
According to The Hollywood Reporter, Craig Turner worked in real estate in California.