A small pod of Type B killer whales (Orcinus nanus) just outside Duse Bay in the Weddell Sea, Antarctica, Polar Regions

orcinus nanus weddell sea duse bay antarctica marine life pod swimming wildlife ocean antarctic region predators cetaceans cold water natural habitat aquatic playful social behavior biodiversity conservation whale watching sea mammals marine ecosystem animal behavior research oceanic marine biology large mammals environment nature underwater ecosystems fauna chilly waters species migratory patterns feeding hunting navigation small pod aquatic animals habitat preservation social structure wildlife habitat ecosystem health marine conservation ecosystems balance polar wildlife