The permanent doesn’t exist

“Ephemerality” (mixed media), by Dawn Surratt, in the group show “The Morphing Medium,’’ at the Maine Museum of Photographic Arts, Portland, through Dec. 3

—Photo courtesy Maine Museum of Photographic Arts.

The museum says:

“This expansive show contains the work of 18 artists who work in the medium of photography. But this is anything but your standard photography show. Artists use the full breadth of what the medium has to offer, pushing the boundaries of technique, material and composition.’’

Gun recovered from the USS Maine on Munjoy Hill, in Portland. The explosion that sank the ship in Havana Harbor on Feb. 15, 1898 was a catalyst for the United States to launch its war against Spain. However, no one has proven what caused the explosion.

— Photo by Ryssby