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Deep-Sea Worm's Toxic Armor: Nature's Arsenic Mystery

8/30/2025

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Summary

Story summary

The deep-sea worm Paralvinella hessleri, located in the Okinawa Trough, produces orpiment, a toxic mineral, for protection.
It accumulates arsenic on its skin, which reacts with sulfide to create this armor.
Additional research is required to clarify the mechanism, as laboratory cultivation remains impractical.

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Story summary

The deep-sea worm Paralvinella hessleri, located in the Okinawa Trough, produces orpiment, a toxic mineral, for protection.
It accumulates arsenic on its skin, which reacts with sulfide to create this armor.
Additional research is required to clarify the mechanism, as laboratory cultivation remains impractical.