View of sign reading Please Leave Nothing But Your Footprints on the Beach, Sahl Hasheesh, Hurghada, Red Sea Governorate, Egypt, North Africa, Africa

Couple walking on the beach leave footprints in the sand at Woolacombe, North Devon, UK

Footprints in the sand, Kniepsand beach, Amrum Island, Nordfriesland, North Frisia, Schleswig-Holstein, Germany, Europe

Two hikers leave footprints in sand at Horseid beach, Moskenesøy, Lofoten Islands, Norway

Conservation sign in Arizona desert