Explore an imaginary coastline with photographer Martha Casanave at 7 p.m. today at Barnes & Noble Booksellers, 1400 Biddle Road, Medford.

She will sign her book, “Explorations Along an Imaginary Coastline,” at the store and talk about the images. She creates dreamy, black and white photos of the California coast using pinhole cameras without lenses.

Her presentation is free. Call the store at 858-0203 for information.