Many of the show’s most striking pieces are from the artist’s “Fathom Seascape” series, combining classical seascapes with technical measurements, a juxtaposition of wild nature and practical science. But as the show’s title indicates, Jeffers doesn’t restrict his subject to the ocean. Some of his paintings apply the same concepts to the wide open expanses of a grassy field, the vastness of a mountain range, the barren slope of a snow-covered hill. These pieces, part of Jeffers’s “Protracted Landscape” series, evoke a similar sense of wonder in regard to the immensity of the natural world. Looking at them, the viewer feels, for an extended moment, like the curious explorer from Carson’s prose, moving in fascination over a deep sea we are unable to enter.