Photo credits

Photos from Wikimedia Commons, used under the licences shown. Thanks to their authors.

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  Glass facade of the Aquàrium de Barcelona on the Moll d'Espanya, with a colourful octopus design on the windows

  Jordiferrer · CC BY-SA 4.0 · colours and contrast edited

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  The glass tunnel of the Barcelona aquarium, with fish swimming around and above the walkway

  Paul Hermans · CC BY-SA 3.0 · colours and contrast edited

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  Pale jellyfish with trailing tentacles drifting in a dark round tank

  Robertgombos · CC BY-SA 4.0 · colours and contrast edited

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  A large moray eel and shoals of silver fish in the big Mediterranean tank, with rocks below

  Robertgombos · CC BY-SA 4.0 · colours and contrast edited

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  A sunfish seen side-on in a large tank, with other fish around it

  Javi Guerra Hernando · CC BY-SA 4.0 · colours and contrast edited

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  A sand tiger shark gliding through a large tank with fish and a sandy bottom

  Javi Guerra Hernando · CC BY-SA 4.0 · colours and contrast edited

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  A penguin standing on rocks in a rocky enclosure

  Nadina · CC BY-SA 3.0 · colours and contrast edited

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  The wavy wooden Rambla de Mar footbridge crossing Port Vell, with the Maremagnum building and the cable car tower beyond

  Georges Jansoone (JoJan) · CC BY 3.0 · colours and contrast edited

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  The Rambla de Mar footbridge and the lit-up Jaume I tower reflected in the water of Port Vell at night

  Enric · CC BY-SA 4.0 · colours and contrast edited

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  The Columbus Monument rising above Plaça Portal de la Pau at the foot of the Rambla

  Enric · CC BY-SA 4.0 · colours and contrast edited

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  Stone walls and battlements of the Drassanes, the medieval shipyards that house the Maritime Museum

  Enfo · CC BY-SA 3.0 · colours and contrast edited

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  Sailing boats moored in the marina of Port Vell, with a tall wooden mast in the foreground

  Georges Jansoone (JoJan) · CC BY 3.0 · colours and contrast edited

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  Cable cars of the Montjuïc line crossing over the rooftops of Barcelona

  Mummelgrummel · CC BY-SA 4.0 · colours and contrast edited

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  White cable car cabins waiting at the lower station of the Montjuïc cable car

  Enric · CC BY 4.0 · colours and contrast edited

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  The thick stone walls of Montjuïc Castle rising above its moat and gardens

  Enric · CC BY-SA 4.0 · colours and contrast edited

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  A red cabin of the Port Cable Car suspended above the harbour buildings

  Enfo · CC BY-SA 3.0 · colours and contrast edited

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  The top of the Jaume I tower of the Port Cable Car, with the harbour and sea behind

  Mister No · CC BY 3.0 · colours and contrast edited