Officers responded to Montrose Beach near the Uptown neighborhood's 500-block of West Lawrence Avenue around 10:30 a.m.
An unresponsive man was found in the water, police said. He was pronounced dead on the scene.
The medical examiner's office later identified him as 25-year-old Saban Ntobeko Exavier Makhubu.
Area Three detectives are conducting a death investigation.
Police did not immediately provide further information.
The video in the player above is from a previous report.