Magnus Lundgren / Wild Wonders of China / Pinnacle of coral and filter feedres, Xiaoliuqiu Island, Taiwan

Gary Bell/ Oceanwide / Rock formation at sunrise, Pulpit Rock, Cape Schanck, Mornington Peninsula, Victoria, Australia

Gary Bell/ Oceanwide / Coastal rock formation, Cape Woolamai, Phillip Island, Victoria, Australia

Gary Bell/ Oceanwide / Coastal rock formation, Cape Woolamai, Phillip Island, Victoria, Australia

Jeff Foott / Balanced Rock formation, La Sal Mountains, Arches National Park, Utah

Jeff Foott / Full moon and Balanced Rock, Arches National Park, Utah

Jeff Foott / Sandstone rock formations, La Sal Mountains, Arches National Park, Utah

Jeff Foott / Western Juniper (Juniperus occidentalis) and sandstone formation, Balanced Rock, Arches National Park, Utah

Jeff Foott / Sandstone rock formations in winter, La Sal Mountains, Arches National Park, Utah

Jeff Foott / Sandstone formations, Garden of Eden, Arches National Park, Utah

Tim Fitzharris / Rock formation and palm trees on beach, Hidden Beach, Palawan, Philippines

Tim Fitzharris / Tide pool, Diamond Beach, Nusa Penida, Bali, Indonesia