…from: The Age
While it is already known that dolphins have "signature" whistles that function like a name, little was known about the meaning of the other whistles they make.
By listening in on bottlenose dolphins under water, marine scientist Liz Hawkins found the creatures had specific whistles for certain activities.
When socialising the dolphins tended to make whistles that were flat or rising in tone, but during their travels "sine" whistles that rise and fall were more frequently heard.
The dolphins also made a particular flat-toned whistle when riding the waves created by the research boat, while early work identified a whistle used often by dolphins living off Queensland's Moreton Island when they were on their own.
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