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That’s when they found Yoldiella haimaensis. The creature is a new species of deep-sea bivalve, an animal that lives inside a self-grown shell, according to the study. Thousands of new species ...

Most species, however, had coiled shells lined with progressively larger chambers separated by thin walls called septa. The animals constantly grew new shell material as they aged, but the their ...

The chambered, or pearly, nautilus (Nautilus pompilius) is a charismatic cephalopod species known for its exceptional spiraling, chambered shell. It belongs to a family that has barely changed since ...