For the first time, scientists have carefully documented a fascinating and unique behavior in humpback whales: blowing intricate bubble rings while interacting with humans. This intriguing discovery offers new insights into non-human intelligence and could even provide clues in the search for intelligent life beyond Earth.
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The research, conducted by the SETI Institute and the University of California at Davis, highlights that these aren’t just random bubbles. They are deliberate, complex “smoke rings” made by whales during friendly encounters, suggesting a potential form of interspecies communication. Studying how advanced Earth creatures like whales communicate could help us recognize potential signals from extraterrestrial civilizations.
The Underwater Art of Bubble Rings
Humpback whales are already known for their clever use of bubbles. They use bursts of bubbles like nets to trap fish, a feeding technique called “bubble-net feeding.” Males also create bubble trails during mating rituals. These behaviors are functional tools or displays related to survival and reproduction.
But the bubble rings observed in this new study are different. These whales seem to be intentionally creating precise, circular vortices of bubbles – much like a human might blow smoke rings – specifically when they are near humans and appear to be engaging in curious or playful interactions.
Multiple examples of poloidal vortex bubble rings created by humpback whales
Bubbles as a Bridge? What This Could Mean
The team studying this phenomenon, known as WhaleSETI, is interested in humpback whale communication as a way to understand how intelligent communication might evolve, here or elsewhere. Their work ties into a key factor (Factor Fi) of Drake’s Equation, a famous formula used to estimate the number of communicative extraterrestrial civilizations in our galaxy. Factor Fi considers the fraction of planets where life emerges that goes on to develop intelligent life capable of communication.
Scientists currently looking for intelligent extraterrestrial life often assume that any intelligent aliens would also be curious and potentially interested in contacting other forms of intelligence. This assumption is bolstered by observing curious behavior in non-human intelligent life on Earth, like humpback whales.
Dr. Laurance Doyle, a SETI Institute scientist involved in the study, noted that the whales’ curiosity supports this idea. They seem willing to approach boats and swimmers, sometimes initiating interaction.
Beyond bubble rings, humpback whales display many characteristics that make them compelling subjects for researchers interested in non-human intelligence and communication. This includes their diverse sounds, complex social structures, use of tools, and even documented cases of assisting other marine animals under attack.
As Dr. Fred Sharpe, a co-lead author from UC Davis, puts it, “Now, akin to a candidate signal, we show they are blowing bubble rings in our direction in an apparent attempt to playfully interact, observe our response, and/or engage in some form of communication.”
The study analyzed twelve instances of humpback whales making bubble rings, with eleven individual whales creating nearly forty rings in total. The fact that whales in different populations around the world exhibit this behavior during curious approaches to humans suggests it’s a consistent, potentially significant action.
Earth’s Oceans as a Lab for Space?
The WhaleSETI team sees their research much like scientists who study extreme environments on Earth, such as Antarctica, as a “proxy” or stand-in for conditions on other planets like Mars before we can visit them directly.
Similarly, studying the complex communication and intelligence of Earth’s aquatic species, particularly advanced cetaceans like whales, can offer valuable models. By understanding how intelligent non-human communication works on our own planet, we might be better equipped to recognize potential signals or characteristics of communication from extraterrestrial civilizations.
Previous work by the team even included an experiment attempting to communicate with an Alaskan humpback whale named “Twain” using recorded whale sounds, to which she reportedly responded positively. These studies collectively help build a picture of what non-human intelligence and its expression through communication might look like, whether it’s in our oceans or light-years away.
The new findings on humpback whales blowing bubble rings were recently published in the journal Marine Mammal Science in a paper titled “Humpback Whales Blow Poloidal Vortex Bubble Rings.” This research pushes the boundaries of our understanding of animal behavior and keeps the door open to fascinating possibilities about intelligence and communication in the universe.
