Southern long-finned pilot whales are marine mammals with a lot to say—and they may use vocalizations to outsmart a deadly foe. Researchers listened to 2,028 vocalizations of long-finned pilot whales off the coast of Australia, the first time sounds from the species in this region have been comprehensively described. Orcas compete for food with long-finned pilot whales and are potentially their predators. But pilot whales can mob and chase orcas away, the only cetaceans seen defending themselves from the apex predator in this way. Pilot whales scavenging or eating orcas' food remnants might go unnoticed if they use orcalike calls.