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Q&A

Biological super skin

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In this world human-like people have skin that is unbelievably difficult to cut through and I was wondering what biologically creatable material is flexible enough to act as skin but it also essentially impossible to penetrate with a medieval era spear.

Same size as humans with a 30% threshold if you need it.

Same size planet as earth with similar atmosphere and minerals, again minor changes necessary are ok e.g. 10% more aluminium or something.

It can be any material that could theoretically be made by a body e.g. some theoretical polymer.

Must be based upon a real material that is either believed to exist by reputable sources or does exist. Minumum handwavium, please.

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This post was sourced from https://worldbuilding.stackexchange.com/q/120250. It is licensed under CC BY-SA 4.0.

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