What major difference exists between the Volcano Snail and most other deep-sea gastropods regarding shell composition?
Answer
It uses iron sulfides for structural reinforcement
While most gastropods utilize calcium carbonate to construct their protective shells, the Volcano Snail has evolved to utilize iron sulfides, specifically pyrite. This unique biomineralization strategy allows for an incredibly tough and pressure-resistant structure, serving as a distinct evolutionary adaptation to the mineral-rich, high-pressure, and chemical-heavy environment of deep-sea hydrothermal vents.
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