Gross McCleaf Gallery in Philadelphia represents noteworthy marine artists such as Douglas Martenson. “The coast of Maine is a natural wonder,” says Martenson. “The rocks along the shore are weather-beaten, wounded but enduring. I love the tides and where I go each summer, they vary by 9 feet. At high tide, only the sun-bleached caps of the boulders are visible. As the water recedes, the entire boulder appears, as if a large whale has emerged from the watery depths. “The ocean is mesmerizing,” Martenson says, “and there is something that draws us to the shore; the waves crashing and the smell of the salt air. Collecting these paintings allows one to bring some of these sensations home.