Feb. 12, 2025 at 8 p.m. on KPBS TV / PBS app + Encores Sunday, Feb. 16 at 3 p.m. on KPBS TV and 8 p.m. on KPBS 2. In Antarctica, killer whales hunt using their intelligence and teamwork. Swimming ...

Although the more docile Weddell seals are favoured prey, the female killer whale we watch now, known as Marge, and her calf Tickle, have begun spy-hopping a sharp-toothed leopard seal.