ABSTRACT
Attaching satellite-linked radio transmitter tags to adult White Sharks provided long-term movement data, leading to the discovery of sex-speci¢c migration patterns in the northeastern Paci¢c. While males annually consistently migrated to a region known as the Shared Offshore Foraging Area (SOFA), females unpredictably roamed over a much larger pelagic area and were more likely to be found in the SOFA during the autumn when the males were absent. Males exhibited a 1-year migration pattern with up to 9 months spent offshore, whereas females were capable of remaining offshore for up to 15 months as part of a biennial migration pattern. One female returned to the adult aggregation site the year after tagging but then remained offshore during the subsequent aggregation period, indicating that females may rest between reproductive cycles. The spatial distribution of mature male and female White Sharks may only overlap for 90-120 d over a 2-year span.
