Adapted to life in opposite environments, dolphins and the great apes have not shared a common ancestor in almost one hundred million years. Nevertheless, dolphins and great apes share many striking physical, ontological, behavioral, and cognitive similarites. Listen as Dr. Kayla Causey, a lecturer in the psychology department at Cal State Fullerton and the creator of the Coastal Dolphins of Orange County Project, talks about the convergent evolution of behavioral and cognitive complexity in dolphins and apes.