Lake Gray Glacier melting in a stream of blue water, Torres del Paine National Park, Patagonia, Chile, South America

A small pod of Tucuxi, or gray river dolphins, Sotalia fluviatilis, surfacing on Nauta Creek, Marañon River, Peru.

A mother and calf Tucuxi, or gray river dolphin, Sotalia fluviatilis, surfacing on Nauta Creek, Marañon River, Peru.

Two juvenile Tucuxi, or gray river dolphin, Sotalia fluviatilis, at play on Nauta Creek, Marañon River, Peru.

Aerial of an old watchtower in the Herault gorge, UNESCO World Heritage Site, Causses and Cevennes, Herault, Occitanie, France, Europe

Male Gray Wolf (Canis lupus) Grey Wolf leaping from creek bank in fresh falling snow, Montana, USA.

Beautiful light illuminates Gray Creek at sunset in the Mount Rose Wilderness near Lake Tahoe, Nevada.

A woman walks across a field in a forest at dusk, Purisima Creek Redwoods, California, United States of America

Oregon, Willamette National Forest, Salt Creek, Snowy trees.