CONTENTS 



Page 



Introduction 1 



Methods, equipment, and personnel 2 



Vessels and boats 2 



Hunting methods 2 



Field examinations 3 



Laboratory methods 3 



Age determination 4 



Degree of grinding 4 



Variation in tooth structure 4 



Stomach examinations 4 



Personnel 4 



Research in 1962 5 



Distribution of seals by time, place, and numbers 5 



Western Alaska 5 



Unimak Pass 5 



Bering Sea 23 



Distribution by age and sex 23 



Tag recoveries 26 



Size and reproductive condition 26 



Size 26 



Pregnancy rate 26 



Reproductive condition 31 



Anomalies 34 



Fetal sex ratio and uterine horn of pregnancy 35 



Food habits 35 



General account of stomach contents •.. 41 



Food items 42 



Relation of fur seals to commercial fisheries 56 



Predators 56 



Summary 56 



Literature cited 58 



111 



