Top three linear mixed-effects models selected using Akaike Information Criterion (AIC) for each adult male and female northern fur seal response variable examined.

F = female; M = male; K = number of parameters; NP = North Pacific Ocean; AS = Alaska Stream; BB = Bering Sea Basin; BS = Bering Sea Shelf; CC = California Current; GA = Gulf of Alaska; WS = wind speed (m sec−1); S = season or days from 1 October; D = proportion of daylight in each 6 h period; M = fraction of the moon illuminated; MLD = mixed-layer depth.