Season 1

Police rescue a man on the Sydney Harbour Bridge.The Dive Unit search a river for a live grenade, while a series of shark attacks puts Sydney's waterways on high alert.

Police intercept a suspected drug-smuggling trawler, search submerged cars for clues to a missing woman, and rescue a disoriented swimmer from Sydney Harbour's busy ferry lanes.

The MAC prepares for Sydney Harbour's biggest night of the year, while officers face a sinking boat, a medical emergency and vessels taking on water, and crews train for an ocean rescue.

The MAC tackles rescues and unexpected discoveries across NSW waters, before Nemesis heads to Newcastle as protesters take to the harbour in a bid to blockade the world's largest coal export port.

The Marine Area Command oversees an international fleet of warships on Sydney Harbour, while the Dive Unit heads to rural NSW to hunt for a missing gun in the turbulent waters of a surging river.

Police patrol dangerous waters from Botany Bay to Coffs Harbour, searching for a missing fisherman, before the Nemesis battles huge seas accompanying the Sydney to Hobart fleet down the NSW coast.