Off the coast of Argentina, seasoned killer whales hunt sea lion pups. See all National Geographic videos: The sight of a dorsal fin poking through shallow water spells danger for a herd of Seal pups on the shore. A Killer Whale has arrived, looking for a bite to eat. The great white shark and the killer whale are the most formidable predators in the sea. These animals are so dangerous that they would never challenge each . One lone sea lion is no match for a pod of female killer whales. See All National Geographic Videos
