A Florida man was left dazed and confused after discovering a 5kg "giant blunt" washed up on the shoreline - covered in blood.

Jeff Stolowitz posted photos of his discovery to Facebook, which showed a large stash wrapped in trash bags and rolled in brown paper.

"The reason I called Beach Patrol was due to the end looking bloody," Mr Stolowitz told the Daytona Beach News-Journal. "It was a bit troubling to look at."

But when Volusia County Beach Safety officers arrived, they discovered the mysterious package was a poorly-wrapped package of cannabis.