In a quiet channel off the coast of Southeast Alaska, a team of scientists has achieved a milestone in interspecies history: a sustained, 20-minute “conversation” with a humpback whale. The whale, named Twain, did not just hear the researchers’ calls – she responded to them, matching their rhythm and timing in a deliberate exchange.
This event marks the first time humans have successfully demonstrated such a long, interactive communicative exchange with a humpback whale using the animal’s own signals. The breakthrough, led by researchers from the SETI Institute, UC Davis, and the Alaska Whale Foundation, uses artificial intelligence to analyze these interactions. Their goal is not only to understand the intelligence of Earth’s giants but to develop filters that could one day help us detect and interpret signals from extraterrestrial civilizations.
How the 20-minute “chat” with Twain happened
The encounter took place in Frederick Sound, Alaska. The research team, aboard a vessel, played a recorded “contact” call into the water using an underwater speaker. This specific sound, known as a “whup” or “throp,” is a common social call humpback whales use to announce their presence or locate others.
A deliberate exchange
When the call went out, Twain, a known adult female humpback, approached the boat. For the next 20 minutes, she circled the vessel and responded to 36 separate playback calls. Crucially, she did not just vocalize randomly. She matched the intervals of the researchers’ signals. If the scientists waited 10 seconds before playing a call, Twain waited roughly 10 seconds before replying. This behavior, known as synchronous turn-taking, is a hallmark of intelligent communication seen in humans and highly social animals.
Confirmation of engagement
The team defines this as a conversational exchange because Twain actively modified her behavior based on the human input. When the researchers stopped playing the calls, Twain eventually disengaged and swam away, suggesting her participation was tied directly to the active signal exchange. The study, published in the journal PeerJ, describes this as an “acoustic and behavioral interaction” that confirms humpback whales can engage in communicative playback experiments.
Why scientists are talking to whales to find aliens
It might seem strange for the SETI Institute (Search for Extraterrestrial Intelligence) to study marine mammals, but the logic is sound. SETI researchers usually scan the cosmos for technosignatures – radio waves or signals that indicate advanced life. However, we have zero examples of what non-human intelligent communication actually looks like.
Developing a filter for intelligence
By studying humpback whales, the Whale-SETI project aims to create a “filter” for intelligence. If we can identify the mathematical structure, syntax, and rule systems that govern whale communication, we can apply those same tools to mysterious signals from space. If a radio burst from a distant star shows the same mathematical complexity as a whale song or a human sentence, it becomes a much stronger candidate for alien intelligence.
Earth as a proxy for exoplanets
Just as astrobiologists study extreme environments on Earth (like Antarctica) to understand Mars, these researchers are studying non-human intelligence on Earth to understand what we might find in the stars. Whales, with their massive brains and complex social structures, are the perfect terrestrial proxy for an intelligent “alien” species.
How AI helps decode the language of giants
While the conversation with Twain relied on recorded playback, artificial intelligence plays the central role in decoding what those sounds actually mean. Humpback whales have a vast repertoire of moans, cries, and complex songs that can last for hours.
Analyzing patterns and syntax
Information theory, a branch of mathematics essential to AI, allows scientists to quantify the complexity of these signals. AI models analyze the “entropy” or unpredictability of whale sounds to determine if they follow a rule-based structure (syntax) like human language. The 20-minute exchange with Twain provided a clean, controlled dataset to test these tools.
Future translation tools
Other initiatives, such as Project CETI (Cetacean Translation Initiative), are taking this further by using advanced machine learning to build a “Google Translate” for sperm whales. These AI systems process millions of clicks and codas to find patterns no human ear could detect. The Twain encounter validates the foundational idea that these animals are capable of interactive, rule-based communication that machines can learn to recognize.
Sources & related information
PeerJ – Interactive Bioacoustic Playback as a Tool for Detecting and Exploring Nonhuman Intelligence – 2023
A post hoc acoustic and statistical analysis revealed an intentional human-whale acoustic interaction where Twain matched the interval variations of the playback calls.
SETI Institute – Whale-SETI: Groundbreaking Encounter with Humpback Whales – 2023
The Whale-SETI team is studying humpback whale communication systems to develop intelligence filters for the search for extraterrestrial intelligence.
UC Davis – Whale-SETI: Humpback Whale Encounter Reveals Potential for Non-Human Intelligence Communication – 2023
Researchers recorded a communicative exchange between humans and humpback whales in the humpback language for the first time.
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