Published 27 August 2026, the latest research into marine mammal communication shows that whales possess complex cultural traditions shaped by sound, from beluga calves learning to “babble” like toddlers to humpback populations swapping entire songs across the Pacific. Scientists are using hydrophones, drones and machine‑learning to decode these vocalisations, uncovering how dialects guide behaviour, migration and even conservation strategies. The findings challenge long‑held assumptions about human exceptionalism and offer new tools to protect whales in an increasingly noisy ocean.
Beluga Babble and the Roots of Vocal Learning
In the freezing fog of Somerset Island in the Canadian high Arctic, researcher Valeria Vergara set up a hydrophone to record the ceaseless chatter of up to 1,000 belugas gathered with their newborn calves. She described the moment: “There I was in my tent, blind, surrounded by fog, with a cacophony of beluga sounds coming to me. And I realised in that moment: they live in a similar kind of visual fog, and yet they are profoundly aware of each other’s presence.” Vergara, director of the cetacean research programme at Raincoast Conservation Foundation, explained that baby belugas must learn their repertoire from adults, a process she likens to human toddlers babbling. “It will take them a good two, three years to begin to be proficient at the beluga repertoire. They are clumsy initially. They play with sound – they babble, very much like human toddlers,” she said. One of the first sounds mastered is an “acoustic name tag” used for self‑identification. Vergara’s work showed that the range of these infant calls is 18 times smaller than that of adults, making them vulnerable to being drowned out by boat noise. This insight contributed to a 2018 decision by Canadian authorities to close key beluga meeting grounds to vessels, allowing the “faint, tentative, underdeveloped calls of little calves” to be heard.
Humpback Song Waves Sweep Across the Pacific
Male humpbacks produce elaborate songs built from phrases and themes that evolve over time. Dr Ellen Garland of St Andrews University, who specialises in humpback song, compared the progression to movements in a symphony. Using decades of recordings plus her own fieldwork, Garland discovered that an individual song can travel as an unstoppable wave from west to east across the South Pacific, with populations completely replacing their existing tune within a season. “Within a season, [a population will] literally throw what they have out the window and rapidly learn this completely new song from their neighbours,” Garland said. “It’s like abandoning your national anthem for something your neighbour is singing.” These rapid cultural shifts are unprecedented in the animal kingdom, save for humans, and have drawn analogies to pop music and fashion cycles. Because song variation correlates with distinct foraging and migration habits, the patterns can help scientists identify which groups may be more susceptible to environmental change.
Sperm Whale Codas as Cultural Markers
Sperm whales communicate through patterned clicks known as codas. Taylor Hersh of Bristol University’s Cetacean Communication and Cognition Group led an international team that found each clan possesses a preferred coda, which she terms an “identity coda”. This distinctive pattern acts like a vocal geotag, signalling group membership and helping researchers match behaviour to local ocean conditions. Hersh noted, “Our best guess is that it reinforces their bond,” adding with a smile, “It would be like me – which I would never do – going somewhere and saying ‘American!’ and someone responding with ‘American! American!’ It seems like it’s this way of reaffirming that they’re part of the same group.” The research shows that sperm whale societies are centred on female relationships and are remarkably peaceful, offering a model of cooperation that challenges notions of human uniqueness.
AI, Translation and the Ethics of Listening
Off the coast of Dominica, the US‑based nonprofit Project Ceti is employing machine‑learning to analyse sperm whale codas, aiming eventually to translate their vocalisations. Lead linguist Gašper Beguš explained that, when the gaps between clicks are removed, some codas resemble vowel‑like sounds, suggesting controlled, meaningful variation. He said, “I think this research is reframing how we think of language, and how we can extend it to some species.” The work has revealed that whales alter coda tempo and frequency in the presence of shipping noise, indicating that their clicks may carry context‑specific information. While some cetacean researchers caution against equating these patterns with human language, there is broad agreement that deeper insight into whale communication can improve protection efforts. Beguš pointed out that the legal definition of language has historically determined which beings receive rights; demonstrating a blurry line could support expanding personhood to whales, a notion already recognised by Indigenous Polynesian traditions.
Why It Matters
Understanding that whales possess learned, culturally transmitted vocal traditions reshapes how we view marine life and our responsibility toward it. If beluga calves risk losing their acoustic identity to boat noise, or if humpback populations can be tracked by the songs they adopt, then conservation measures must address not just chemical pollution or ship strikes, but the preservation of soundscapes that sustain whale societies. The emerging ability to decode these signals offers a non‑invasive way to monitor health, migration and stress levels in real time, potentially guiding more nuanced policies — such as seasonal speed limits or protected acoustic sanctuaries. Ultimately, recognising whales as cultural beings erodes the idea that complex societies are a solely human trait, urging a broader ethical consideration of the ocean’s inhabitants.
