Juan Manuel Borrero / Wind turbines, Collet dels Feixos, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Vineyard landscape, Planes del Priorat Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Vineyard landscape, Planes del Priorat Area of Natural Interest, Tarragona, Catalonia,Spain, May 2013.

Juan Manuel Borrero / Roman aqueduct, Tarragona, Catalonia, Spain. December 2003.

Juan Manuel Borrero / Old Roman wall, Tarragona, Catalonia, Spain. April 2008.

Albert Lleal / Mollusc shell fossil, Tarragona, Spain

Juan Carlos Munoz / Scots pine (Pinus sylvestris) forest in Caro Mountain Range, The Ports Natural Park, Terres de l'Ebre, near Tarragona, Catalonia, Spain. April 2017.

Juan Carlos Munoz / Scots pine (Pinus sylvestris) forest in Caro Mountain Range, The Ports Natural Park, Terres de l'Ebre, near Tarragona, Catalonia, Spain. April 2017.

Juan Carlos Munoz / Fish hatchery, Aigua Natura. Toscar Valley, The Ports Natural Park, Terres de l'Ebre, near Tarragona, Catalonia, Spain. April 2017.

Juan Carlos Munoz / Almond (Prunus amygdalus) trees, Horta de San Joan, The Ports Natural Park, Terres de l'Ebre, Catalonia, Spain. April 2017.

Inaki Relanzon / Siurana Church and Siurana Reservoir, Priorat area, Tarragona, Catalonia, Spain.

Juan Manuel Borrero / Pyrenean oak tree (Quercus pyrenaica) leaves, Prades Mountain Area of Natural Interest, Tarragona, Catalonia, Spain, May.

Juan Manuel Borrero / Sea stock (Matthiola sinuata) flower, Gaia River Area of Natural Interest, Tarragona, Catalonia, Spain. May.

Juan Manuel Borrero / Dwarf everlasting flowers (Helichrysum arenarium) Plana de St. Jordi, Area of Natural Interest, Tarragona, Catalonia, Spain, May.

Juan Manuel Borrero / Pyrenean oak tree (Quercus pyrenaica) leaves, Prades Mountain Area of Natural Interest. Tarragona, Catalonia, Spain, June.

Juan Manuel Borrero / Cliffs in Pradell-La Argentera mountain range Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Cliffs in Pradell-La Argentera mountain range Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Landscape in Plana de St. Jordi Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Landscape in Plana de St. Jordi Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / European black pine tree (Pinus nigra) growing on cliffs, Pradell-La Argentera Mountain Range Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Mouth of the river Gaia. Gaia River Area of Natural Interest, Tarragona, Catalonia, Spain, May.

Juan Manuel Borrero / Tamarisk tree (Tamarix boveana) flower, Sebes Natural Reserve, Tarragona. Catalonia. Spain, May.

Juan Manuel Borrero / Siurana River Area of Natural Interest, Tarragona, Catalonia, Spain. May 2013.

Juan Manuel Borrero / Vineyard landscape, Planes del Priorat Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Vineyard landscape, Planes del Priorat Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Vineyard landscape, Planes del Priorat Area of Natural Interest, Tarragona, Catalonia, Spain, May 2013.

Juan Manuel Borrero / Cloister of the Santes Creus Monastery, Tarragona Province, Spain, May

Juan Manuel Borrero / Olive trees (Olea europaea) in grove, Montsia, Tarragona Province, Spain, May

Juan Manuel Borrero / Carbonaria Mountain Range, Tossal Gros de Miramar, Tarragona Province, Spain, May 2012

Juan Manuel Borrero / Cloister of the Santes Creus Monastery, Tarragona Province, Spain, May

Juan Manuel Borrero / Snails (Cepea sp) on vegetation, Els Muntanyans, Tarragona Province, Spain, April

Juan Manuel Borrero / Mountains in Serra de Llaberia, Tarragona Province, Spain, April

Juan Manuel Borrero / Wild Oat (Avena sterilis) with rain droplets, Province of Tarragona Province, Spain, May

Juan Manuel Borrero / Rough Bindweed (Smilax aspera) fruit, Province of Tarragona Province, Spain, March

Juan Manuel Borrero / Boats moored in Delta del Ebro Natural Park, Tarragona, Catalonia, Spain. June 2009.

Juan Manuel Borrero / Boats moored in Delta del Ebro Natural Park, Tarragona, Catalonia, Spain. June 2009.

Juan Manuel Borrero / Ebro river, Delta del Ebro Natural Park, Tarragona, Catalonia, Spain. May 2009.

Juan Manuel Borrero / Fraguerau Gorge, Monsant Natural Park, Tarragona, Catalonia, Spain. May 2009.

Juan Manuel Borrero / Boats moored in Delta del Ebro Natural Park, Tarragona, Catalonia, Spain. June 2009.

Juan Manuel Borrero / Holm oak (Quercus ilex) in Prades Mountains Natural Park, Tarragona, Catalonia, Spain. May 2008.

Juan Manuel Borrero / Roman statue of Romulus and Remus drinking milk from a wolf, Tarragona, Catalonia, Spain.

Juan Manuel Borrero / European beech (Fagus sylvatica), El Port Natural Park, Tarragona, Spain.

Juan Manuel Borrero / Striated cliffs in Monsant Natural Park, Tarragona, Catalonia, Spain. May 2008.

Juan Manuel Borrero / Spring channelled through pipe, El Port Natural Park, Tarragona, Spain.

Juan Manuel Borrero / El Port Natural Park, Tarragona, Spain. October 2008.

Juan Manuel Borrero / Vineyard in Monsant Natural Park, Tarragona, Catalonia, Spain. May 2008.

Juan Manuel Borrero / El Port Natural Park, Tarragona, Spain. October 2008.

Juan Manuel Borrero / Roman circus at Tarragona, Catalonia, Spain. 2008.

Juan Manuel Borrero / Romanesque hermitage of Siurana, Tarragona, Catalonia, Spain. April 2008.

Juan Manuel Borrero / Woman watering balcony plants on top floor of tall building, Old district of Tarragona, Catalonia, Spain. April 2008.

Oriol Alamany / Crescent Moon over lighthouse and Punta de la Banya marshes at dusk, Delta de l'Ebre Natural Park, Tarragona, Catalonia, Spain, March

Oriol Alamany / Tractor working in a rice field followed by a flock of Slender-billed Gulls (Larus genei) Deltebre, River Ebro delta, Tarragona, Catalonia, Spain, December

Albert Lleal / Albaida (Anthyllis cytisoides) growing in sandy soils along the coast of the Mediterranean Sea, Tarragona, Spain

Albert Lleal / Morning fog over pine forest, Tarragona, Spain

Albert Lleal / Antlion (Myrmeleontidae) larva, Tarragona, Spain

Albert Lleal / Ammonite (Platiknemiceras bassei) fossil of the Triassic period, Tarragona, Spain

Albert Lleal / European Mantid (Mantis religiosa) eating grasshopper, Serra del Montsant Natural Park, Tarragona, Spain

Jose B. Ruiz / Ebro river delta at Laguna del Garxall, Tarragona, Spain

Juan Manuel Borrero / Marram grass establishing itself on shallow dunes of Marquesa beach, Delta del Ebro NP, Tarragona, Catalonia, Spain, Europe

Juan Manuel Borrero / Marram grass and other plant species growing on shallow dunes of Marquesa beach, Delta del Ebro NP, Tarragona, Catalonia, Spain, Europe

Juan Manuel Borrero / El Garxal wetland habitat landscape, Edlta del abro nature reserve, Tarragona, Catalonia, Spain, Europe

Jose B. Ruiz / The Ebro river flowing through Tortosa, Tarragona, Spain

Jose B. Ruiz / Devil's Arch, Roman aquaduct, Tarragona, Spain, Europe

Inaki Relanzon / Black-winged stilt (Himantopus himantopus) pair mating on a windy day, Delta del Ebro Natural Park, Tarragona, Spain. April.

Joel Sartore / Photo Ark / Tarragona isopod (Isopoda sp.) dorsal view, portrait, Josh'sFrogs. Captive.

David Perpinan / Slow motion shot of Reed warbler (Acrocephalus scirpaceus) in a mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Slow motion shot of Reed warbler (Acrocephalus scirpaceus) being released and flying out of human hands, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Reed warbler (Acrocephalus scirpaceus) with a geologger attached on its back, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Reed warbler (Acrocephalus scirpaceus) with a geologger, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Operator placing geologger on a Reed warbler (Acrocephalus scirpaceus), Ebro Delta, Tarragona, Spain, June.

David Perpinan / Operator placing geologger on a Reed warbler (Acrocephalus scirpaceus), Ebro Delta, Tarragona, Spain, June.

David Perpinan / Operator placing geologger on a Reed warbler (Acrocephalus scirpaceus), Ebro Delta, Tarragona, Spain, June.

David Perpinan / Man removing Reed warbler (Acrocephalus scirpaceus) from mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Man removing Reed warbler (Acrocephalus scirpaceus) from mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Reed warbler (Acrocephalus scirpaceus) in mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Reed warbler (Acrocephalus scirpaceus) in mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Reed warbler (Acrocephalus scirpaceus) in mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Reed warbler (Acrocephalus scirpaceus) caught in mist net, Ebro Delta, Tarragona, Spain, June.

David Perpinan / Audouin's gull (Larus audouinii) chick in nest, panting due to summer temperatures, Tarragona, Spain, June.

David Perpinan / Audouin's gull (Larus audouinii) chick ringing procedure, Tarragona, Spain, June.

David Perpinan / Audouin's gull (Larus audouinii) chick ringing procedure, Tarragona, Spain, June.

David Perpinan / Group of Audouin's gull (Larus audouinii) in a breeding colony, Tarragona, Spain, June.

David Perpinan / Audouin's gull (Larus audouinii), chick held during bird ringing, Tarragona, Spain, June.