Question

what does dorudons, blue whales, and killer whales have in common that the other species do not?

Answer 1

Dorudons, blue whales, and killer whales are all species of cetaceans, or marine mammals. This sets them apart from other species that do not belong to the cetacean family, such as sharks, dolphins, and fish. Additionally, all three species mentioned are known for their large size and are considered some of the largest animals in the ocean.