Chum Island: Catching a Killer

About Chum Island: Catching a Killer

In this Shark Week whodunnit, a rare surge of highly aggressive shark attacks hit a tight-knit community off Australia’s southern coast, prompting marine biologist Riley Elliott to find and tag the oceanic suspects. But when he discovers this could be a new, elusive population of sharks, he builds the world's first "chum island" to lure them in and uncover if they are the ones responsible for the…

Chum Island: Catching a Killer is a 2026 documentary film. At 42 minutes long, it arrived in July 2026.

In the United States it streams on Discovery +, Discovery+ Amazon Channel, and HBO Max.

It carries a NR rating.