It will wear it!
Maybe it's for UV protection. Maybe the extra weight helps stabilize them in stronger currents. Whatever it is, wild urchins are known to wear shells and other objects like hats. So if you 3-D print an urchin hat... you get the cutest thing I've seen all week!
Thank you to the Weirdest Thing I Learned this Week podcast for the cool fact!
If you give a sea urchin a hat...
If you give a sea urchin a hat...
Any time the solution is "banjo rifle", I'm in 100%.
Re: If you give a sea urchin a hat...
Give an urchin a hat and he will wear it; teach an urchin to hat and he will hat for a lifetime.