As bizarre as it sounds, a "caul birth," as it is called, is harmless and can is actually an ideal situation, Us Weekly points out, because it protects the baby and provides a less painful experience for the mother. During most vaginal births, the mother's water breaks, which is the final indicator that she is going into labor. But for Amatus, her water did not break, and she instead started giving birth to her daughter while she was still enclosed in the sac.