The giant slabs of rock within which caves form are called karst units. Epikarst is a term that delineates a specific region of a karst rock unit. The epikarst is the uppermost weathered zone of carbonate rock, between the surface or surface soils and the unweathered rock below. This layer of the karst rock unit can store water in cracks and joints. Epikarst life forms exploit the water filled or moist cracks and fissures that fracture the rock. This amphipod is an epikarst species, inhabiting the water filled cracks in karst. Occasionally, these creatures get captured in a drip and fall out of the epikarst and into drip pools, this was the case with this amphipod observed in a remote drip pool in a Delaware County cave, Oklahoma, 2012.