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Ask Dr. Universe

Dr. Universe looking through a microscope

Question of the Week

  • How are seashells formed? And why are they different colors? Can seashells live or die?

    Dear Caroline,

    Seashells come in an astounding variety. Some are curved and round, others long and tube-like. Some are smooth, others bumpy. Some are large, others small. Plus, they come in a rainbow of colors: red, green, brown, purple, pink, and more.

    All that variety comes from the same source: little animals called mollusks, with a mighty muscle called a mantle.

    I found out all about them from my friend Richelle Tanner, a scientist at Washington State University. She is very curious about the ocean and knows a lot about mollusks, a type of animal with a soft, moist body.

    Read Story

 

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