
Dolphins' signature whistles function as lifelong personal names, new evidence shows
Bottlenose dolphins begin each life with a unique signature whistle that becomes a lifelong, referential label; experiments show dolphins respond to synthesized whistles lacking the producer’s voice, proving the whistle itself encodes the name rather than just voice. Dolphins use and copy these name-like signals to address specific individuals, retain them for decades, and remember others’ names across long spans, establishing them as the first non-human species with verifiably personal-naming capabilities; later research has extended the concept to elephants as well.













