Scientists at the Karadag Nature Reserve in Ukraine have determined that dolphins speak to one another in sentences up to 5 words long.
The researchers have no clue what the dolphins are saying, but I gather they're discussing when it'll be time to leave.
Via the Telegraph:
Dolphins have possessed brains that are larger and more complex than human ones for more than 25 million years.
The researchers found that Yasha and Yana could create sentences of up to five "words", but the scientists still do not understand the content.
Dr Ryabov said it was now beyond doubt that dolphins speak their own language and it is time to start studying how to communicate directly with them.
"Humans must take the first step to establish relationships with the first intelligent inhabitants of the planet Earth by creating devices capable of overcoming the barriers that stand in the way of using languages and in the way of communications between dolphins and people," he added.