The crucial info that's missing from the article is that they used AI to translate whale language to human, and then from human to whale again.
So there was, in fact, a conversation, mediated by AI; a lot like using Google Translate to talk to a whale.
Wait for a better article on it.
https://peerj.com/articles/16349/ (also has a PDF download)
This experiment teaches us basically nothing and has no bearing on talking to extraterrestrials. I can't believe it was written up this way.
Blame the crappy article, not the science, experiment or paper.
This isn't bad science, but it's not exciting or any kind of breakthrough. It's some preliminary work that might lead to something more interesting in the future. It seems that the authors were desperate to make it seem more important than it was.
The fury at this article in the comments is puzzling to me
Plenty of animals communicate, just not like we do. I’ve always found the self-righteousness of humans to not accept that to be ridiculous and indicative of how entitled we are as a species.