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The Researchers Translating Whale Language

July 1, 2026

AI Summary

5 min read

In 2015, researchers aboard the Nautilus were scanning the ocean floor near the Galapagos Islands at 5,800 feet deep when their robotic submarine’s camera caught a flash of blue. They zoomed in on a tiny octopus small enough to sit in the palm of a hand, with big black eyes and a plushy appearance. It took a decade of careful work—including a CT scan in Chicago—to confirm that this creature was not just a new specimen but an entirely new species: a Microeledone octopus, the first of its genus discovered in the deep equatorial Pacific. The discovery underscores a sobering statistic: scientists estimate that 91 percent of marine species have never been described, and climate change may erase some before we ever find them.

But the episode’s main thread is far more ambitious: decoding the language of sperm whales. Dr. David Gruber, founder and CEO of Project CETI, explains how a chance encounter with a cryptographer at Harvard led to a large-scale effort to translate sperm whale communication using machine learning. The conversation weaves together the discovery of a new octopus species, the mechanics of whale language research, and a promising new gene-editing therapy for cholesterol—but the throughline is the growing scientific push to understand non-human intelligence on its own terms.

The Sperm Whale Phonetic Alphabet

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What you'll learn

  • 1 (02:04) **Whales & Octopus: Episode Preview** - Host Samantha Mean introduces three main topics: a new octopus species, a gene-editing therapy, and the main feature on sperm whale language translation.
  • 2 (02:41) **New Deep-Sea Octopus Species Discovered** - Scientists officially classify a tiny, blue octopus found in 2015 as a new species after a decade of study.
  • 3 (07:18) **Why Study Whale Communication?** - Dr. David Gruber explains the unique human fascination with whales and why they are a compelling subject for interspecies communication research.
  • 4 (10:01) **The Origin of Project CETI** - A late-night encounter with a cryptographer at Harvard led to the formation of a massive interspecies communication project.
  • 5 (12:44) **Collecting Whale Sounds Without Disturbing Them** - The engineering team has developed specialized non-invasive tags and a multi-sensor array to record whale conversations in context.
  • 6 (16:01) **The "ChatGPT for Whales" and the Language Debate** - Project CETI is building the largest non-human database to translate sperm whale communication, though the word "language" remains controversial.
  • 7 (17:12) **Discovering a Sperm Whale Phonetic Alphabet** - Researchers found that sperm whales use a combinatorial and contextual "alphabet" of clicks, and have now discovered a new layer of complexity: "vowels."

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Show Notes

Understanding animal communication has always seemed out of reach, but as technology advances, it might be more possible than ever before. Project CETI is an organization aimed at translating the language of sperm whales. This episode, Dr. Samantha Yammine is joined by Dr. David Gruber– the founder and CEO of Project CETI– to discuss how and why his team is translating whale conversations. Before that, Sam looks into the discovery of a new octopus species and later, she explores a new study that describes a new treatment for lowering cholesterol.  

 

Link to Show Notes HERE 

 

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