"Lilly’s work on interspecies communication has since gone in and out of vogue several times within the SETI (Search for Extraterrestrial Intelligence) community. Today, it’s back in fashion, thanks to new applications of information theory and to technological advancements, such as theCetacean Hearing and Telemetry (CHAT) device, a submersible computer interface that establishes basic communication with dolphins. The return to dolphins as a model for alien intelligence came in 1999, when SETI Institute astronomer Laurance Doyle proposed using information theory to analyze animal communication systems, particularly the whistle repertoire of bottlenose dolphins...
What Doyle and his colleagues demonstrated is that communication exists on a complexity spectrum. This mathematical tool could be the first step toward a SETI intelligence filter, helping astronomers determine whether intercepted cosmic noise bears linguistic hallmarks."
There is some super interesting linguistics in here.
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