S1, E4: An entire family find themselves caught in a rip at Victoria's Gunnamatta Beach. Two brothers disappear from a Gold Coast beach, and treacherous surf in Sydney's North Cronulla means a routine boat patrol is anything but that.

S1, E4: An entire family find themselves caught in a rip at Victoria's Gunnamatta Beach. Two brothers disappear from a Gold Coast beach, and treacherous surf in Sydney's North Cronulla means a routine boat patrol is anything but that.