Stormygeddon

The whales Gracie and George were stated to have wandered into San Francisco as calves. Outside of feeding events which can include the famous bubble nets, humpback whale pods usually consist of a lone mother and calf (or calves) pairing with a trailing "escort" male. Humpbacks are one of the few mammals that can be nursing and still get pregnant. So anyway, the implication seems to be that if they were both calves and coming in the same time as a pod, they must have been orphaned from their mother and part of the same family group. Therefore, when its later revealed that Gracie is pregnant this one question comes to mind:

"Was the pregnancy a product of incest?"

No wonder they were originally going to be called Adam and Evie.

The show had already established how Tendi has green blood earlier in the series after an injury and it would have been an easy to infer detail compared to humans in the show.

Other animated shows like Steven Universe already show how non-pink blush colors can work in animation.

By that I mean that the basic premise being: that the means of (re)creating new technology is lost, the current technology around is treated as sacred and the function marred in elaborate rituals or prayers because they don't know how to otherwise operate it, and to a lesser extent that new ideas or (often xenophillic) research is met with suspicion or outright rejected because it doesn't fit with the religious dogma.

I keep feeling that a similar group is somewhere in Star Trek, right on the cusp of my memory, but I can't seem to recall any specific examples.