London: A new research has revealed that when two dolphin species come together, they attempt to find a common language.
Bottlenose and Guyana dolphins, two distantly related species, often come together to socialise in waters off the coast of Costa Rica.
Both species make unique sounds, but when they gather, they change the way they communicate, and begin using an intermediate language.
That raises the possibility the two species are communicating in some way.
It is not yet clear exactly what is taking place between the two dolphin species, but it is the first evidence that the animals modify their communications in the presence of other species, not just other dolphins of their own kind.
Biologist Dr Laura May-Collado of the University of Puerto Rico in San Juan made the discovery studying dolphins swimming in the Gandoca-Manzanillo Wildlife Refuge of the southern Caribbean coast of Costa Rica.
Bottlenose dolphins (Tursiops truncatus) are larger, measuring up to 3.8m long, with a long dorsal fin, reports the BBC.
Details are published in the journal Ethology.