A nematic liquid crystal is conventionally used in two glass substrates because it has fluidity. In this research, a nematic LC is sandwiched by water instead of the usual glasses and an influence of water on the LC is investigated. A texture of the membrane was observed by a polarizing microscope and an electrooptic response of the membrane was measured by a crossed polarizing optical system. It was found that there was variety of the responses depending on the penetrating position of the LC membrane.