In mountainous regions of the world, there are human societies that use whistled languages to transmit and understand a potentially unlimited number of meanings over great distances. While in graduate school, Dr. Diana Reiss began to wonder: If humans can encode great amounts of information in whistles, perhaps much more is going on with the whistles of dolphins than we once thought. Reiss is an internationally renowned expert on dolphin intelligence and a Professor of Psychology at Hunter College in New York City. With colleagues, she was the first to demonstrate that dolphins can recognize themselves in mirrors, a capability once thought to be unique to humans, and has taught dolphins to communicate with underwater interactive keyboards. In this episode, she describes how she got early support for her work from SETI researchers, John Lilly’s complex role in shaping scientific and public interest in dolphins, the parallels between dolphin and human whistle languages, the importance of anecdotal experiences in science, and her advocacy work to end dolphins hunts in Japan.