Where does this come from, and can I check it?

The whistle works as a name that others copy when they want attention. The figure is taken from NOAA Fisheries, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a animals fact?

Yes. It sits on the Animals shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Each dolphin has its own signature whistle

The whistle works as a name that others copy when they want attention Bottlenose dolphins develop the whistle in their first year and keep it recognisable. Researchers broadcast them to groups and watched individuals respond to their own. Dolphins also sleep with one half of the brain at a time. It sits in Mondo's animals collection, one of 200 facts that each trace back to the reference below.

Where this comes from

NOAA Fisheries

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

Nature & Animals trivia

More facts like this

Treehoppers send vibrations through stemsMothers signal to nymphs by shaking the plant rather than the air Honeybees communicate flower locations through dancingA waggle dance informs hive mates of the direction and distance to nectar.Elephants communicate over miles using low-frequency vibrationsElephants detect seismic infrasound waves through sensitive foot pads.Wolf pack members alter howling pitch to sound like a larger groupHarmonic chorus howling tricks rival packs regarding territory strength.A honeybee dances to give directionsThe angle of the waggle run matches the angle of the flowers to the Sun Elephants talk in frequencies we cannot hearTheir low rumbles travel through the ground and through the air for kilometres

Tags: dolphins, communication, identity

Each dolphin has its own signature whistle: the short answers

Where does this come from, and can I check it?: The whistle works as a name that others copy when they want attention. The figure is taken from NOAA Fisheries, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a animals fact?: Yes. It sits on the Animals shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.