Sort of.

It’s not quite “So long and thanks for all the fish”, but this beluga whale has learnt to mimic human speech.  Go on and take a listen.

The whale doesn’t have a firm grasp of sentence structure, phrasing, or even vocab, but the sound patterns he emits are closer to human than beluga in rhythm and acoustic spectrum.

I’m reminded of the dolphins living on Anne McCaffrey’s Pern, which had been transplanted there with the rest of the colonists after humans recognised them as a sentient species and they learnt to speak English.

How long do you think it will be before that happens in reality?