Harvesting salt at the saline ponds near Chiclana de la Frontera. The orange-red colour depends on the level of salinity and is directly caused by the algae Dunaliella salina and brine shrimp. Aerial view. Drone shot. Cádiz province, Andalusia, Spain.

dunaliella salina salt marsh salt works natural area seaside summer manual activity person salt outdoor high angle view day colorful pair top view august microorganism water surface motif (pattern) cadiz (province) green micro algae (dunaliella salina) drone view salt marshes saltworks nature natural areas ecosystem ecosystems coasts seasides coast summertime manual activities human beings persons human being human presence human presences human humans salts outdoors outsides outside high angle shot overhead shots overhead shot overhead sight overhead sights overhead view overhead views days daytime colourful rudy colorfully colored duet pairs duets 2 two top views top sight top sights view from above top shot micro organism micro organisms microorganisms microbe microbes water surfaces watersurface watersurfaces motifs pattern salt exploitation wetland area artificial wetland area freshwater wetland area area salt exploitation land use natural resources use naturalness strand temperate season seasons ambiance traditional activity activity economic activity individual mineral matter matter (substance) shot colour enumeration water (matter) domus andalusia autonomous community spain european union europe chlorophyceae green alga / chlorophyta alga flora aerial view