dolphins

The dolphins are the second most intelligent species on the planet Earth, only surpassed by mice, although many outside observers don't know about the mice. They long ago knew of Earth's planned destruction and tried to communicate this to humans who misinterpreted it as "amusing attempts to punch football or whistle for tidbits." The last ever dolphin message was misinterpreted as a surprisingly sophisticated attempt to do a double backward somersault through a hoop while whistling the "Star Spangled Banner," but was, in fact, a message. The message was "So long, and thanks for all the fish."

"For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons.”