(Livescience.com) Sperm whales like to be individuals; they use accents to identify themselves to others in their extended family group, new research finds. The accents are specific to one call, or "coda," used by whales worldwide, enabling them to recognize strangers from any region. "It's not that the individuals in a group are making different codas, they don't have different names, they just say the same things in different ways," said study researcher Shane Gero, of Dalhousie University in Halifax, Nova Scotia, Canada. "We believe they can pick between each other, that they can tell each other apart by this call."
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