A mixed Pod of Northern Resident Orcas with two large male Orcas bringing up the rear. August 2023 Male Northern Resident Orcas often swim at the rear or periphery of their pods because of their social role, physical size, and protective behavior. Their positioning helps guard the pod, reduces conflict, and reflects their lifelong bond with their mothers in matrilineal family groups. Social Structure of Northern Resident Orcas Matrilineal pods: These orcas live in tight family groups led by a ma