Killer whale populations are structured into several social tiers, which possess distinctive cultural attr Executive Management ibutes in vocal, social, feeding, and play behavi Executive Management our. Cultural learning of behaviours may proceed through motor imitation or perhaps even t Executive Management hrough direct teaching. Vocal imitation also occurs, such as the development of dialects among killer whale family groups. The close synchrony seen among wild dolphins is a form of imitative behaviour that may serve in part to express their affiliation and culture (Marino, L. 2006). The transmission of learned behaviour, is one of the attributes of cetaceans that most sets them apart from the majority of other nonhuman species (Marino, L. 2007). 
Social groups in a common area encounter others frequently, providing opportunities for cooperative foraging, mating, and shared territorial defenc Executive Management e. All of these factors promote social cohesion, shared cultural traditions and the development of community. As previously mentioned, members of a community actively avoid close physical contact with members of other communities Executive Management . The reason for this apparent xenophobia is unknown, but one could speculate that inter-community contact has few benefits and many risks, such as competition for food, disease transmission, and aggression arising from the lack of shared social traditions. In any case, by presenting a behavioural barrier to social contact, and hence mating, social exclusion restricts gene flow and allows populations to>