An orca whale, also known as a killer whale, glides past my skiff, showing only its distinctive dorsal fin. This one is known as a “resident orca,” because it is part of a family pod and eats a diet of fish. (Other orcas are classified as “transients,” who do not travel as a family, and eat only other marine mammals.) I composed this image so that the dorsal fin and its surrounding ripple echo the thrust of the mountain range on the distant horizon. I converted the picture to black and white to further abstract the scene, making it seem silent and ethereal.