Tom Mustill is a biologist, wildlife filmmaker and author of the book How to Speak Whale: A Voyage into the Future of Animal Communication. In this episode, we talk about the time a whale jumped on Tom, the unexpectedly popular album of whale song that galvanised the Save the Whales movement, and the researchers working on using artificial intelligence to understand whale communication. Produced by Ryan Pemberton Editing help from Alex Tighe and Cheyne Anderson Fact checking by Caitlin Cherryh, Piyumal Demotte and Nhan Ly-Trong Artwork by Evie Hilliar The whale recordings on this episode are courtesy of Ocean Alliance (https://whale.org/)