Sablefish are extremely long-lived, some reaching over 90 years of age. For this species, life begins with winter spawning along the continental shelf at depths greater than 3,300 feet (1,000 metres). After spawning, its lifecycle progresses relatively quickly. Larval sablefish are found in surface waters over the shelf and slope in April and May and within the following six months juveniles will begin to migrate inshore. From the ages of two until five, juveniles will come of age in near-shore and shelf habitats. Growth during this phase is very rapid with the average female growing to maturity in just three to five years. At this point, they establish themselves as highly migratory fish, with significant movement documented from nursery areas in B.C.’s Hecate Strait to the Gulf of Alaska and the Bering Sea.