Deadliest Catch, Seismic Shift

The crabs have vanished, starting a gruelling hunt to save the fleet's way of life, and Captain Sig resumes the helm after a major heart attack.

The fall season begins with uncertainty. A seismic shift in sea temperature sends the fleet searching for displaced crab – and fighting an unusually large first storm.

Toxic smoke engulfs the Saga, Sean struggles to save the family business on the Brenna A and Wild Bill fears he may lose Nick to a terminal illness.

Wild Bill gets the truth about Nick’s terminal illness. A damaging mechanical issue threatens to crush Jake's future and warming seas force Keith into the unknown.

Johnathan and Andy fish together for the last time. Keith's inattentive crew sends the Wizard on a collision course and an angry deckhand tests Jake's resolve.

A massive leak fills the Time Bandit. A fistfight tests Jake's resolve while heavy winds and a snapped anchor threaten to wreck his boat.

A big decision weighs on Sig Hansen. Rookie captain Sean Dwyer gambles on a new venture with a new crew. Meanwhile, Jake struggles to replace a lost anchor.

As fall season ends, its biggest storm hits. Wild Bill fights to pilot his new boat in big seas and Johnathan tackles a huge swell in the perilous False Pass.

Competition doubles when the quota is halved. Three captains arrive early for the winter season, but Johnathan plots a dangerous, 600-mile course to Russia.

Sig returns to the season that nearly killed him. After a tough start, Keith and son fight to prove themselves. Plus, Wild Bill gives Nick another chance.

When the Arctic unleashes its winter wrath, the first of several hurricanes descend on the fleet. Patchy fishing and mutiny converge to create the perfect storm.

The season's first storm rocks the fleet as Sig plays cat-and-mouse with towering waves. Keith sees an 800-lb crab pot launch into a deckhand's spine.

Sig's stress takes a toll while Sean tries to dock in a hurricane. Keith is left dead-stick in massive seas and Johnathan rolls the dice by the Russian border.

Sig, Johnathan and Jake try to escape a second arctic hurricane, but Keith refuses to heed warnings. Stress-induced chest pains threaten the rest of Sig's season.

After suffering chest pains, Sig awaits news in the hospital. Wild Bill pilots the Summer Bay whilst handling conflict on deck, and Sean lays down the law with Zack.

The perilous Bering Sea is wreaking havoc. Sean is set to collide with another boat, two deckhands get taken down on the Wizard, and Jake almost loses a deckhand, twice.

Two old friends race to finish their seasons. Johnathan Hillstrand wants to bid farewell in a blaze of glory, but the Bering Sea may have other plans.

The Coast Guard scours the Bering Sea for a missing crab vessel, while the fleet awaits news on fate of its crew. After a plea from his wife, Sig ponders an early exit.

After the Destination tragedy one last storm hits Edgar, Bill, Sean and Jake. The Coast Guard fear the worst for another fishing vessel as it takes on water.