Pollock are characterized by a pelagic larval stage that typically lasts between three and four months. When individuals reach 3 cm in length they migrate into the shallow sublittoral zone until near the end of their second year. Individuals are often termed "harbor" pollock at this stage (Steele 1963). At the end of their second year, juveniles move to offshore regions where they will spend most of their adult life (Cargnelli et al. 1999).
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