Then They Either Starve to Death, or Develop a Taste for Human Flesh

Brooklyn kid pointing to training buoys: What are those big red things floating out there?
Lifeguard: Oh, that's our shark fence.
Brooklyn kid: What?!
Lifeguard: Yeah, that's our electric shark fence. It keeps the sharks out. Unless they were already in when we put it up -- then they are stuck inside.

--New Jersey