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Elephants Use Infrasound Over Miles to Coordinate Group Movement and Alert to Danger

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Discovery

Curated by Surfaced Editorial·Nature·2 min read
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Researchers at Cornell University's Elephant Listening Project discovered that African elephants communicate using infrasound, sounds too low for humans to hear. These low-frequency rumbles, typically between 15 and 25 Hz, can travel up to 6 miles (9.6 km) through the ground and air, allowing herds to coordinate movements across vast distances. Scientists confirmed this through an array of passive acoustic sensors, observing distinct calls for mating, warnings, and greetings. This challenges the previous belief that visual and scent cues were primary for long-range coordination, revealing a sophisticated auditory social network. The findings were extensively published in journals like Animal Behaviour over several years.

Why It’s Fascinating

Experts were surprised by the sheer range and complexity of elephant infrasound communication, which goes far beyond simple calls. This discovery overturns prior understandings that focused more on visual and chemical signals for long-distance elephant communication, highlighting the critical role of sound. Within 5-10 years, this understanding could lead to advanced bioacoustic monitoring systems, allowing conservationists to track elephant populations, anticipate their movements, and detect poaching activities without intrusive physical tagging. Imagine a subtle tremor in the ground acting like a silent, urgent text message, alerting a family to an approaching predator. Conservationists, policymakers, and local communities living near elephant habitats benefit most from this insight. How might understanding such 'silent' communication change our approach to protecting endangered species? This contrasts with theories suggesting elephants primarily use scent trails for long-range navigation.

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