The Deep-Sea Snail with an Iron Shell

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Deep in the Indian Ocean, scientists have discovered a snail whose feet are covered in iron scales, but how it builds these scales is a bit of a mystery.

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Sources:
https://academic.oup.com/mollus/artic...
https://www.researchgate.net/publicat...
https://science.sciencemag.org/conten...
https://www.iucnredlist.org/species/1...
https://www.sciencedirect.com/science...
https://www.pnas.org/content/107/3/987

Images:
https://en.wikipedia.org/wiki/File:Ch...
https://en.wikipedia.org/wiki/File:Ch...
https://en.wikipedia.org/wiki/File:Th...
https://commons.wikimedia.org/w/index...
https://en.wikipedia.org/wiki/File:Ch...