The Namib Sand Sea is a unique coastal fog desert on Africa's South Atlantic coast and the only one in the world that includes extensive dune fields influenced by fog. Covering over 3 million hectares, it consists of two dune systems: an ancient semi-consolidated one overlain by a younger active one. The dunes are famous for their sheer size and their striking red color, which comes from the oxidation of iron in the sand over millions of years. This desert is a place of incredible adaptation; because rainfall is almost non-existent, many endemic plants and animals survive solely on the moisture provided by the morning fog that rolls in from the ocean. This includes the 'Dancing White Lady' spider and various beetles. It was inscribed as a UNESCO World Heritage site in 2013, recognized for its exceptional natural beauty and the ongoing geological processes of its wind-sculpted landscape.