Shark expert's chilling prediction days before 12-year-old was mauled in Sydney Harbour: 'A snack for something like these'

A shark expert issued an eerie warning just days before a young boy was mauled by a suspected bull shark in Sydney Harbour.

Shark attacks boy swimming in Sydney Harbor, leaving him in critical condition

The predator bit the boy, believed to be about 13 years old, during the late afternoon off Shark Beach, police said.