When a dolphin whistles, what does it mean?

Dolphin signature whistles function like human names, with each individual developing a unique whistle, often learned through social interaction, and sometimes resembling their mother's. Dolphins use these whistles to identify themselves and call others, especially when separated, and mothers modify their whistles' pitch when near calves—similar to human 'motherese.' Despite decades of research, the origins and full communicative structure of these whistles remain partially unknown.

Hear how decades of field research reveal that dolphins use name-like whistles with social complexity rivaling humans, yet remain enigmatic in how they acquire and modify them.

1. 01Each dolphin develops a unique signature whistle, akin to a human name, used for self-identification and social bonding.
2. 02Dolphin mothers raise the pitch of their whistles when communicating with calves, mirroring the 'motherese' pattern seen in human infant-directed speech.
3. 03While dolphins clearly communicate, researchers avoid calling it 'language' due to the lack of evidence for human-like syntax or grammar evolved over 50 million years apart.