I’m 45 now and recently rekindled a life-long passion for skateboarding. Most Saturday mornings I meet up with other middle aged skaters, some academics, and have some fun while getting exercise. One thing that constantly surprises me is how much things hurt when you’re old.

Check out this beautiful lake-fish 🐠 nest. The fish used its tail to sweep the nest clean, essentially segregating grain sizes; sand piled around the perimeter, gravel in the center, outer margins are fine sands and silty mud. Last night there was a strong wind that modified sands with 🌊 ripples ⚒️

Foraged some tasty chanterelles today

What are these tiny sand accumulations called, and how do they form?

Working hypothesis: combo of post high tide salt crystallization and aeolian sand transport?
🏝️⚒️