Research from recent decades has shown that the gap between a human mind and the minds of animals is much smaller than it seems. Sometimes it isn’t even a gap—just a small space. And first of all, this applies to animals such as orcas: far from us in evolution and way of life, yet close in intelligence and social nature. How do these marine mammals live and communicate with one another? Can we understand their language? How do they form their families? How do fish-eating and meat-eating orcas differ? Hardly anyone could tell you about all this more engagingly and authoritatively than Olga Filatova—a biologist, specialist in acoustic communication of marine mammals and the behavior of cetaceans. Together with her colleagues, the listener will travel to Kamchatka, Chukotka, and the Commander Islands, where research on whales is carried out, will observe the course of difficult and thrilling expeditions, learn how the story of orca captures in Russia began and ended, and what role scientists played in the fight against illegal capture.