“The Simpsons” has dropped its latest exclusive Disney+ episode, and this time around Springfield is going wild in a National Geographic-inspired installment. Can you say corporate synergy?

Though it’s called “Yellow Planet” — a clear reference to BBC One’s award-winning “Blue Planet” series — a press release for the episode specifically notes that the installment is a “National Geographic-style nature mockumentary.” All the citizens of Springfield are transformed into various wild animals as a British narrator documents their various journeys. Homer and Marge appear as two different species of whales; Bart hatches as an iguana; and Lisa the finch leads her flock. You get the idea.

“Yellow Planet” joins other Disney+ episodes such as “The Past and the Furious” and the two-part “O C’mon All Ye Faithful.” It’s one of four Season 36 episodes that are exclusively available on the streamer. Select episodes from Season 36 are currently available on...