Snails have shells the moment they're born, but it's kind of hard to tell. In fact, it's hard to even see a baby snail. Some are nearly microscopic, such as Angustopila psammion, whose adult-sized ...
This snail became the first animal living on deep-sea hydrothermal vents to be added to the IUCN Red List of Threatened Species—it also turns poisonous sulfur into armor ...
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