NUNZIUM

A recent study published in the journal Proceedings of the National Academy of Sciences has discovered that dolphin mothers use a high-pitched baby talk when communicating with their young ones. This fascinating finding not only adds to our understanding of the complex social lives of these intelligent marine mammals but also highlights the similarities between dolphins and humans in terms of how we communicate with our offspring.

Dolphins are known for their unique and complex communication skills, which include a signature whistle that each individual uses, similar to calling out their own name. Researchers recorded the signature whistles of 19 mother bottlenose dolphins in Florida's Sarasota Bay and found that the mother's whistle pitch is higher and her pitch range is greater when directed at her calves. The data for this study were collected over more than three decades using special microphones on wild dolphin mothers in the area.

The study was co-authored by Laela Sayigh from the Woods Hole Oceanographic Institution, Peter Tyack from the University of St Andrews, and Frants Jensen from Aarhus University. They focused on the bottlenose dolphin population in Sarasota, Florida, where dolphin calves stay with their mothers for an average of three years. This extended period of bonding allows the researchers to study the communication between mother and calf more thoroughly.

Baby talk, or motherese, is a common phenomenon in the animal kingdom. It is believed to help offspring learn to pronounce novel sounds or catch their attention. For example, humans use a higher pitch and exaggerated intonation when talking to babies, which is thought to help them learn the language more effectively. Similarly, the high-pitched baby talk used by dolphin mothers could serve a similar purpose in helping their calves learn to vocalize the many sounds needed for effective communication.

However, it remains unclear if dolphins use this baby talk for other exchanges or if it actually helps their offspring learn to "talk." Further research is needed to determine the exact purpose and benefits of this unique form of communication among dolphins. So, the next time you find yourself cooing at a baby, remember that you might not be the only species using baby talk to connect with the younger generation.