The Korean crevice salamander (Karsenia koreana) is a lungless salamander. It dwells under rocks in limestone forest areas of the Korean peninsula. It was discovered by Stephen J. Karsen, an American science teacher working in Daejeon, South Korea, in 2005. Although plethodontid salamanders comprise seventy percent of salamander species worldwide, Karsenia koreana is the first member of this taxon known from Asia. Like other plethodontids, it lacks lungs and breathes through its moist skin.