Aerial view of low tide Wetlands, bird sanctuary in Santona

aerial view low tide wetland birdwatching sanctuary marismas de santona santona spain landscape beautiful scene swamp outdoors protected area habitat migratory birds reserve ecosystem ecotourism marshland coastal natural scenery environment vegetation rural marshes biosphere travel tide natural park texture coastline drone nature wilderness idyllic marsh peaceful flyover sunny no people river estuary ornithology seashore scenic daytime