We know dremora, scamps, orgrims and all those daedra monsters are lesser daedras/servants of the daedric princes. So i came up with this theory about the spriggans, bears and many other creatures being lesser aedras. Spriggans seems like the minions of Kynareth since shes all about nature. What you guys think?

Y'know, I don't think you're too far off here, in that the flora and fauna of Nirn are just the products of the natural world which is made up of the dead bodies of the Aedra themselves.

Aedra are ancestors. What man or mer would claim descent from mudcrabs?

Well, there is that one scene in Last Year of the First Era. Granted, it's probably fictional in-universe as well. This witch summons several air spirits that 1HKO a band of marauding orcs. Taratha and Pina, the fingers of Kynareth.

Thooooough, I wonder if it comes down to whether you're a straight descendent of the Aedra, or just the metafungal afterlife growing on the Aedric remains.

But do men and mer share a common ancestor with mudcrabs?

And what are men and mer made of?

their not made of anything from what I could tell. I just always though that they were different types of Aedric spirits that had became entraqed on Nirn, or more or less that they were simply shaped differently during the creation/duration of Mundus.