Female growth estimates from length-frequency analysis (15-30 mm per month) were slightly lower than statolith-based estimates (30 mm per month). Both sexes had a life-span of approximately one year and males grew faster and attained a larger size than females. In both sexes growth was found to be logarithmic over the size range sampled (28-505 mm mantle length). Mean estimated age of mature males and females was 317 and 312 days respectively, with the minimum age at maturity found to be 236 and 241 days. Spawning season extended from November to May. Squid hatched in the spring grew faster than those hatched in the autumn and winter.