Salmon can migrate several thousand miles through the ocean to reach their freshwater spawning grounds. Depending on the size of their natal river, they can cover additional dozens or hundreds of miles swimming upstream.
When salmon make their challenging way upstream to reach their spawning grounds, they use up all their energy, and their bodies start to shut down. This process results in fish that are rotting alive, hence the term zombie salmon.
Alaska is the world’s largest commercial salmon fishery. Annually, the region produces hundreds of millions of fish and employs more than 15.000 fishermen. While being both dangerous and demanding, to many fishermen, it’s the job opportunity of a lifetime.
In total, there are six main types of salmon in the world. They include the five Pacific species king, sockeye, chum, coho, pink salmon, and the one Atlantic salmon species.