I think he's come back for his noon feeding.

Jaws in 30 seconds, re-enacted by bunnies.

"Y'all know me. Know how I earn a livin'. I'll catch this bird for you, but it ain't gonna be easy. Bad fish. Not like going down to the pond and chasing bluegills and tommycocks. This shark, swallow you whole. No shakin', no tenderizin', down you go. And we gotta do it quick, that'll bring back your tourists, put all your businesses on a payin' basis. But it's not gonna be pleasant. I value my neck a lot more than three thousand bucks, chief. I'll find him for three, but I'll catch him, and kill him, for ten. But you've gotta make up your minds. If you want to stay alive, then ante up. If you want to play it cheap, be on welfare the whole winter. I don't want no volunteers, I don't want no mates, there's too many captains on this island. Ten thousand dollars for me by myself. For that you get the head, the tail, the whole damn thing."
Quint, from Jaws