S4 E1 • Battle Cry

The Sea Shepherds depart on their 2010/2011 ant-whaling campaign with a new, fast interceptor vessel. Early on, they find two harpoon ships before the whaling fleet has killed a single whale. Could they be set up for their most successful campaign ever?

Première diffusion : 3 juin 2011

S4 E2 • No Escape

After engaging the harpoon ships using the small boat teams, Captain Paul Watson makes the call to abandon the harpoon ships and go in search of the factory vessel. After a few hours of sailing, the tables have turned — two harpoon ships begin tailing Sea Shepherd!

Première diffusion : 10 juin 2011

S4 E3 • Ghosts in the Machine

Tailed by a harpoon ship, the Steve Irwin enlists the help of the Sea Shepherds' new, fast interceptor ship in an attempt to break free. Meanwhile, the Bob Barker crew spots a large blip on their radar and believe it could be their ultimate target: the Nisshin Maru.

Première diffusion : 17 juin 2011

S4 E4 • The Devil's Icebox

When damage happens to one of the small boats, and the Bob Barker is five hours away, the crew realizes that they will have to spend a night at sea. But the crew is wet and freezing already, and early symptoms of hypothermia begin to set in.

Première diffusion : 24 juin 2011

S4 E5 • Tracking the Enemy

The Bob Barker desperately searches for their two small boat crews who were lost at sea in the aftermath of a daring mission. Meanwhile, the Gojira locates the whalers' refueling vessel and Locky plays a dangerous game of "chicken" with the massive ship.

Première diffusion : 8 juillet 2011

S4 E6 • Race to Save Lives

New Zealand's Navy contacts the Steve Irwin to respond to an emergency distress signal where five crew members from a Norwegian sailboat have gone missing. Now the Sea Shepherds must risk their lives in a dangerous mission to find the missing mariners.

Première diffusion : 15 juillet 2011

S4 E7 • Enemy In Their Grasps

As the first leg of their campaign comes to a close, the Sea Shepherds battle physical and mental exhaustion, especially pilot Chris Aultman. Thanks to an anonymous tip, the Steve Irwin finally locates the whalers' factory ship, the Nisshin Maru.

Première diffusion : 22 juillet 2011

S4 E8 • Battle Stations

The Bob Barker and Gojira launch an ambitious assault on the harpoon ship that has been following them and manage to completely disable the whaling vessel. Now free of its tail, the Barker continues searching for their ultimate target, the Nisshin Maru.

Première diffusion : 29 juillet 2011

S4 E9 • The Giant Enemy

The Sea Shepherds finally locate the factory vessel after months of searching, but it promptly tries to evade the Gojira.

Première diffusion : 5 août 2011

S4 E10 • Delivering the Final Blow

In the fourth-season finale, Watson claims a major victory after 30 years of fighting, while he and the crew reaffirm their commitment to stopping the whaling fleet.

Première diffusion : 12 août 2011