Why does Hooper not mention finding Ben Gardener's corpse?

Rating: 9/10 (26 December 2014)

When Hooper dives on Ben Gardener's wrecked boat and is investigating the hole/s in the hull, Gardener's corpse floats into view, shocking Hooper into dropping the sharks tooth, as well as his flashlight and diving knife. When Hooper swims back to his own boat he says nothing about the discovery to Chief Brody, nor does he mention the body when arguing with the Mayor about closing the beaches. Surely the fact that the shark has killed yet another person would lend weight to his opinion yet he says nothing about it. Later in the movie it is mentioned that Gardener is still "missing", even if the body floated out of the boat when it was towed in, I imagine that a police forensic examination would conclude that Gardener was killed in the attack on the boat.
Any ideas on this puzzling behaviour?