Many scientists, writers, and laypeople consider cetaceans (dolphins and whales) to be very intelligent — almost, or even equally, as intelligent and self-aware as human beings. But we can't talk to them, so we can't be sure. This trope is for dolphins and whales that quite clearly demonstrate their human-level intelligence by talking to non-cetaceans, communicating via telepathy, using magic or technology, piloting spaceships, or other activities generally beyond merely-clever animals. Examples of Sapient Cetaceans include: