Nearly all of these images were made at Lanzarote. It's closest to Africa of the Canarian archipelago and eastern winds regularly drop a fresh load of sand at Famara beach, a few kilometres behind the mountain ridge of the north. The beaches in the east and south also offer great graphical patterns.
Famara is my fave beach in this respect. The east coast is always windy and in spite of the fact that every day the dunes are 'spoilt' by people making shortcuts, the wind sees to it the day after the dunes look pristine again.
--- 23 Dec 2020, Famara (E) ---
The western beaches of the Canary Islands have an enormous diversity in sand colour: from black lava sand to yellowish/brown sand, sometimes even imported from the Sahara, to pure white in the north of Lanzarote.
--- 8 Jan 2021, Arrieta & Puerto del Carmen ---
Black lava sand from one of the small beaches of the westernmost Canarian island, La Palma, and the white sand on the north coast of the easternmost one, Lanzarote.
--- 18 Dec 2010, Puerto Naos (E) / 23 Dec 2018 nr Órzola (E) ---