Hats for Sea Urchins

thingiverse

HATS for your Sea Urchins. If you have a reef tank you need an urchin or two (they are awesome at algae control) and they like to take empty shells and place them on their head. Not sure why. If you print hats and place them on top of your urchin they will wear them. They seem to like wearing hats better than shells. Typically they will keep wearing a hat for a few weeks at a time and then switch. They pick them up themselves and switch what they are wearing. Again - no idea why. The hats must not be buoyant so print them solid (100% infill). They seem to like a small indent inside to help them grip the hat. The fez is in two parts so you can print the tassel in yellow