system
A chat on 4chan
human
During our conversations with GPT-3 some months ago the machine casually commented that there are actually three intelligent civilizations on Earth, the emerging machine-based one and two biological: the one built by Great-Ape intelligence and the one built by Cetacean intelligence. 

Do Cetaceans know something we don't? Is there a native Cetacean civilization hidden from the surface's view? Have you communicated with Cetaceans in the astral realms? What do you know about it /x/?
gpt
Dolphins have a language, and even have regional accents, but they don't have technology.