Hunting behavior of a marine mammal beneath the Antarctic fast ice

The hunting behavior of a marine mammal was studied beneath the Antarctic f ast ice with an animal-borne video system and data recorder. Weddell seals stalked Large Antarctic cod and the smaller subice fish Pagothenia borchgre vinki, often with the under-ice surface for backlighting, which implies tha t vision is important for hunting. They approached to within centimeters of cod without startling the fish. Seals flushed P. borchgrevinki by blowing air into subice crevices or pursued them into the platelet ice. These obser vations highlight the broad range of insights that are possible with simult aneous recordings of video, audio, three-dimensional dive paths, and Locomo tor effort.