In nine out of 14 cases, the dolphin would turn more often toward the speaker if it heard a whistle that sounded like a close relative's.
vs.
Bottle nose dolphins have been found to have identifying sounds for each indivudual.
I think there's a bit of a gap here. It's interesting, but... let's call an apple an apple.
More than that, two dolphins may refer to a third by the third animal's name, said Laela Sayigh, one of three authors of a paper published in the Proceedings of the National Academy of Sciences.
I'd
really like to know more about this. Anybody have the time / interest to track down the journal article / research paper from which this CNN article was based?