摘要: Behaviour is an evolutionarily labile species trait that responds to environmental opportunity within the constraints imposed by more conservative traits such as anatomy and physiology. Because of their different degrees adaptation a marine environment, pinnipeds provide interesting group in which look at these relationships between physiological opportunities. Although behaviour shaped interaction environment physiology, it tum influences physiology restricts environments animals are exposed. This chapter looks interplay anatomy, producing social individual behaviours observed broad range pinnipeds. pinniped parameters easily than mechanisms delineated, contribution must often be inferred comparison with from other orders.