What Has the Whale to Say?

Sperm whales are among the most extraordinary creatures on the planet—massive, deep-diving, highly social, and constantly communicating. David Gruber, marine biologist and founder of Project CETI, leads a global team of scientists using cutting-edge technology to decode the vocalizations of these remarkable animals. A 2025 Tällberg-SNF-Eliasson Global Leadership Prize winner, Gruber explains how understanding whale communication isn’t about speaking to them, but about learning how they see and interact with the world we share. In this episode, he discusses the science, wonder, and purpose behind CETI—and what unlocking whale language could mean for humanity.