A dead body was found floating Thursday alongside the Marine Park Golf Course in Brooklyn, shocking golfers out enjoying one of the first pleasant days of the season.

Police are on site investigating.

“They’re going to retrieve the body,” a worker in the pro shop told The Post shortly before 6 p.m. “It’s in the creek on the eighth hole of the course. It apparently came up with the tide.”

The superintendent made the gruesome discovery in the afternoon, on a day when nearly 100 golfers have made the rounds.

The body was found in a creek that runs to the course from Gerritsen Beach.