-
Miranda do Douro Municipality, Braganca, Portugal
-
Peniscola, Valencia, Spain
-
Ribadelago de Franco, Castille and Leon, Spain
-
Arredondo, Cantabria, Spain
-
Ribadelago, Castille and Leon, Spain
-
Arredondo, Cantabria, Spain
-
Arredondo, Cantabria, Spain
-
Trichodesmium (trike-owe-des-me-um) bundle. This is a filamentous blue green alga, which can occur in abundances which discolour the water. Not known to produce toxins, but abundances may be high enough to disturb the supply of oxygen to other organisms. This is a dense cluster of filaments. Dark ground image by Dave Caron.
-
Råbjerg Mile, Jylland, Danmark
-
Bruz, Brittany, France
-
Villoslada de Cameros, La Rioja, Spain
-
Arredondo, Cantabria, Spain
-
Rumoroso, Cantabria, Espaa
-
Muelas del Pan, Castille and Leon, Spain
-
Miranda do Douro, Bragana, Portugal
-
Laguna de Cameros, La Rioja, Spain
-
Arredondo, Cantabria, Spain
-
Ribadelago de Franco, Castilla y Len, Espaa
-
Ribadelago de Franco, Castille and Leon, Spain
-
Barrio Ballinas, Castille and Leon, Spain
-
Ribadelago de Franco, Castille and Leon, Spain
-
Arredondo, Cantabria, Spain
-
Villoslada de Cameros, La Rioja, Spain
-
Arredondo, Cantabria, Spain