Brief resources
!simple http://www.whalefacts.org/how-do-dolphins-communicate/
http://www.carefordolphins.net/en/index.php?cat=f
https://dolphins.org/communication
http://www.dolphincommunicationproject.org/index.php/2014-10-21-00-13-26/dolphin-language
What N. Chomsky would say? And if it is really so important what he could say compared to hundreds of researches who focus on dolphin communication in their daily scientific work
https://chomsky.info/2007____/
A discussion in a light of Chomsky style of his point of view
https://www.quora.com/Does-dolphin-communication-exhibit-Chomskys-Universal-Grammar
How about dogs?