His NamUs page has been removed.
I found this article from February that has more information about this man:
A man's body was found in the San Sebastian River last year, but he still remains unidentified. Police need your help identifying the man in the canoe.
www.firstcoastnews.com
[...]
A marina owner snapped a picture of a man in a canoe. It was taken in June, about six weeks before the man’s body was found. The man's face is not visible, but you can see his leg, a fishing pole and some of the items in the canoe.
"We have found some of the items that were in the canoe in the picture at a campsite, so we think the subject was camping in a little island in the San Sebastian River," says Sgt. Kevin Carroll.
[...]
They say the best description they can give right now of the man in the canoe is a white male, age 20s-40s, about 5’7, no tattoos, but two gold teeth near the front of his mouth.