Indeed:
NASA took the photos, but it was Sean Doran and Brian Swift who spotted the dolphin and “visual artist and citizen scientist” Doran then Tweeted it.
I’m guessing that this dolphin is not a permanent fixture, but an accident of cloud formation. I’m guessing it will soon be gone. But what do I know? About dolphins. On Jupiter. Or anywhere.
See also, these two galaxies, which resemble a penguin looking after its egg.