For years, the biggest threat on Deadliest Catch was the ocean. Then the crabs disappeared. For seventeen seasons, fishermen braved freezing waters, violent storms, and life-threatening conditions in pursuit of one thing: crab. No matter how dangerous the job became, there was always the expectation that the catch would be waiting. Then came an announcement that stunned the entire industry. How could a fishery that had operated for generations suddenly shut down? And what did scientists discover that left fishermen fearing for the future? Join us as we uncover what really happened when Deadliest Catch was forced to confront an unthinkable reality.