Bottlenose dolphins have been observed chattering while cooperating to solve a tricky puzzle a feat that suggests they have a type of vocalisation dedicated to cooperating on problem solving.
Holli Eskelinen of Dolphins Plus research institute in Florida and her colleagues at the University of Southern Mississippi presented a group of six captive dolphins with a locked canister filled with food. The canister could only be opened by simultaneously pulling on a rope at either end.
The team conducted 24 canister trials, during which all six dolphins were present. Only two of the dolphins ever managed to crack the puzzle and get to the food.
The successful pair was prolific, though: in 20 of the trials, the same two adult males worked together to open the food canister in a matter of 30 seconds. In the other four trials, one of the dolphins managed to solve the problem on its own, but this was much trickier and took longer to execute.
But the real surprise came from recordings of the vocalisations the dolphins made during the experiment. The team found that when the dolphins worked together to open the canister, they made more vocalisations than they did while opening the canister on their own or when there was either no canister present or no interaction with the canister in the pool.
Importantly, the researchers were able to show that the increase in chatter was directly related to the canister-opening task as opposed to social interactions between the dolphins.
https://www.newscientist.com/articl...uage-that-helps-them-solve-problems-together/
