In response to a recorded humpback “contact” call played into the sea via an underwater speaker, a humpback whale named Twain approached and circled the team’s boat while responding in a conversational style to the whale’s “greeting signal.” During the 20-minute exchange, Twain responded to each playback call and matched the interval variations between each signal.

We believe this is the first such communicative exchange between humans and humpback whales in the humpback ‘language’.