Ocean Warriors

Environmental activists Sea Shepherd patrol Antarctica for poachers; an undercover team hunts for the explosives dealer behind blast fishing in Tanzania; journalist Jim Wickens joins angry locals in Thailand in a fight against illegal fishing.

In Antarctica, Sea Shepherd clash with a notorious poaching vessel; an undercover sting operation in Tanzania leads the team to an explosives super-dealer; Jim Wickens exposes illegal shark finning by foreign ships in Palau's protected waters.

After narrowly avoiding a collision with the Thunder, Sea Shepherd attempts to contact the crew of the poaching vessel by throwing messages onto its deck; in Palau, Jim Wickens confronts the extreme poverty that drives illegal fishing.

Sea Shepherd teams up with a commercial fishing boat to fight against the Thunder, a poaching vessel; Greenpeace activists confront a captain over the illegal shark fins in his ship's hold; in Tanzania, the team discover a cache of explosives.

The captain of the Thunder sends out a mayday alert and calls on Sea Shepherd to rescue his crew; Jim Wickens turns his focus to high-seas slavery in Indonesia; Greenpeace clashes with fishermen while protecting the rare vaquita porpoise.