Despite knowing of them for hundreds of years and collecting many samples, there's still so much we don't know about them.

📸 NOAA public domain

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They build elaborate shells from the material they scavenge, catch or their own crystalline waste.

📸 NOAA public domain

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You're gonna like this one. I got to talk to the photographer of that faithful image!

We talk about what actually happened that day and the aftermath.

I'm really glad you found it. Don became a regular contributor to the show, about 35 episodes, I think. It's usually 5 minutes near the end. He shared some very candid stories that we don't think appear elsewhere.
We really miss him.