Call this one Phantom of the Turtles. Or the Case of the Masked Reptile. But this story's no Halloween tale. It's all about an endangered species, three-dimensional printing and veterinary ingenuity.

A wounded turtle found in Muğla, southwestern Turkey, was treated and released back into the wild after a local craftsman repaired its damaged shell using natural resin. Gökçen Gökmen Bayram, head of ...