Your'e still on the green route, so let's see where your next choice will take you: (1) It is impossible to make whales extinct because whaling operations targeting individual species stop when they become unprofitable. Therefore, there is no need to regulate whaling operations. (2) Whaling, if properly regulated, is sustainable and therefore acceptable. (3) History teaches us that there is no such thing as a sustainable commercial hunt of marine mammals. It is impossible to restrain the human desire for maximum profits in the minimum time, and any commercial hunt will inevitably result in serious depletion from which stocks may never recover.