According to the edition of "Rosbalt", Scottish zoologists have determined that dolphins have names, they refer to each other. As the scientists explain, it's kind of call signs for animals, and with their help, dolphins communicate.
Scientists have been recorded sounds, which, as it seemed and there are the names of the dolphins. After turned on the audio, so the dolphins have heard. Eventually it was revealed that each of the animals responded only to its own name.
From the comments of the Russian service of the BBC, it became clear that all this is so that animals could communicate and find each other at large distances, because to find their smell they can't do, and this system of communication is very effective.
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Previously I discussed the fact that dolphins have names, but this was not confirmed. And just now Scottish researchers who conducted the experiment, found that this method of communication in dolphins really are.