While photographing some lichens on a rotting stump in our yard (about 2,000 feet), I saw this tiny slug with a small, almost covered shell. Image 3 shows the slug hanging from a slime trail attached to Lipstick Cladonia lichen. with ruler for scale
I photographed this similar slug in nearly the same location. Olympic National Park lists the Dromedary Jumping-slug as an endemic species, one found nowhere else.