In hydrothermal vent fields, a small snail evolved an iron-reinforced shell. Here’s how it challenges assumptions about ...
Ned, bottom, a pale-bodied snail who has a left-spiralling shell pictured with a right-spiralling snail in a small town in the Wairarapa, New Zealand, on Aug. 22, 2025. (Giselle Clarkson via AP) ...
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