I stumbled accross a draft of the starfish and the spider https://www.amazon.de/dp/B000S1LU3M/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1
which motivated me to write this blog. Starfishes have the great ability that they do not have a head - apparently every leg (or how is it called?) is kind of an independent entity, and some species are even able to recover themselves from just a leg.
Still I'm not sure if a starfish is a good example for antifragility, since it just recovers from pressure, it does not gain strength.
Great examples are hard to find, but it is fun to search them :)

Anyways, thanks for recommending the black swan to me