The Future Is Wild/Fridge


 * Fridge Horror: In the final episode, it is hinted that the squibbons will eventually become sentient and build a civilization. Cthulhu or Mind Flayers, anyone?
 * And the last shot of that episode is a closeup of the Sun. Guess what happens later on.
 * Fridge Logic: Some of the evolutionary roads are a bit strange. The Ocean Phantom is a descendant of the Portuguese Man-O-War, which itself is a composite creature, meaning each creature making up the Man-O-War evolved together into the Phantom. And some species and even entire families that are well-known for their ability to adapt, like bats and rodents, just up and die out completely for no rational reason.
 * Also: how do the bumblebeetles mate? They only live for a day, and as far as can be told they do not have some special mating ceremony like, say, california squid.
 * According to the book, they're sexually mature and mate as larvae ("grimworms").