A reader writes:
The photo that you had up of the little penguins wearing protective sweaters was wonderful. I just read about a similar man-made project for hermit crabs. There's a shell shortage and they're getting desperate:
Hermit crabs don’t make their own shells. They scavenge their homes. And now, hermit crabs are facing a housing shortage as the worldwide shell supply is decreasing. With a shell shortage, hermit crabs around the world are being forced to stick their butts into bottles, shotgun shells, and anything else they can find. This is not acceptable. As a community, we can reach out to this vulnerable species and offer our digital design skills and 3D printing capabilities and give hermit crabs another option: 3D printed shells.
The Dish 