Authorities said the man was found at Whihala Beach on the morning of May 25.
He is described as Asian, 5'6" and 176 pounds. Investigators say he was found wearing blue Hollister T-shirt, Aeropostale blue jeans, a brown Kenneth Cole belt and black Nike gym shoes.
Officials have not said how he died.
Anyone with information is asked to call the Lake County Coroner's Office at (219) 755-3265.