Low tide at blue hour reveals a muddy riverbed of fishbone shaped streams in the middle of a small, but unique part of the salt marsh located at the end of the Betanzos Estuary, near Coruna in northern Spain.

Low tide at blue hour reveals a muddy riverbed of fishbone shaped streams in the middle of a small, but unique part of the salt marsh located at the end of the Betanzos Estuary, near Coruna in northern Spain.