They slip soundlessly through our landscapes, cloaked in a rainbow of colors and patterns that help them become one with bark, rocks, leaves and soil. Often the only sign of their existence is what they leave behind: ghostly shed skins imprinted with shapes of eyes and scales, traces of pigmentation...

Atiya Wells was 22 when a walk in a park changed her view of the world. Growing up, she thought of natural areas as places for family cookouts, “not really seeing the forest for the trees,” she says. But on a date with her then-boyfriend-now-husband, Kieron, she ventured beyond the picnic areas of a...