The entrance to the the Aquatics Centre in the Olympic Park during the Gold Challenge event, London, England, United Kingdom, Europe

The entrance to the the Aquatics Centre in the Olympic Park during the Gold Challenge event, London, England, United Kingdom, Europe

The entrance to the the Aquatics Centre in the Olympic Park, London, England, United Kingdom, Europe

Swans on Eure River, Eure-et-Loir department , Centre-Val de Loire region, France, Europe

The waterfront at Puerto Baquerizo Moreno, San Cristobal Island, Galapagos, Ecuador. The capital of the San Cristobal Canton, the town is a centre for fishing and tourism with a large population of sea lions.

View of swans and ducks with Iceland model building in the city centre of Reykjavik in winter, Reykjavik, Iceland

View of swans and ducks with City Hall in background in the city centre of Reykjavik at dusk in winter, Reykjavik, Iceland

View of waterfront buildings and City Hall in background in the city centre of Reykjavik at dusk in winter, Reykjavik, Iceland

View of swans and ducks with Lutheran Free Church in background in the city centre of Reykjavik in winter, Reykjavik, Iceland

View of swans and ducks with City Hall in background in the city centre of Reykjavik at dusk in winter, Reykjavik, Iceland

View of swans and ducks with colourful buildings and city skyline in background in the city centre of Reykjavik in winter, Reykjavik, Iceland

View of swans and ducks with colourful buildings and city skyline in background in the city centre of Reykjavik in winter, Reykjavik, Iceland

View of swans and ducks with colourful buildings and city skyline in background in the city centre of Reykjavik in winter, Reykjavik, Iceland

Olympic Park Aquatic Centre with Docklands and Canary Wharf skyline behind, London, England, United Kingdom, Europe

Aquatics Centre in the 2012 London Olympic Park, Stratford, London, England, United Kingdom, Europe

Aquatics Centre at night in the 2012 London Olympic Park, Stratford, London, England, United Kingdom, Europe

The Aquatic Centre, Queen Elizabeth Olympic Park, Stratford, London, E20, England, United Kingdom, Europe

The Aquatic Centre, Queen Elizabeth Olympic Park, Stratford, London, E20, England, United Kingdom, Europe

Views of Orbitz and London Aquatic Centre over Three Mills River, Queen Elizabeth Park, Stratford, London, England, United Kingdom, Europe

Views of Orbitz and London Aquatic Centre over Three Mills River, Queen Elizabeth Park, Stratford, London, England, United Kingdom, Europe

The Aquatic Centre, Queen Elizabeth Olympic Park, Stratford, London, E20, England, United Kingdom, Europe

London Aquatics Centre, Stratford, London, England, United Kingdom, Europe

Aquatics Centre in the Olympic Park, Stratford City, London, England, United Kingdom, Europe

Aquatics Centre in the Olympic Park, Stratford City, London, England, United Kingdom, Europe

European otter (lutra lutra) portrait, british wildlife centre, uk

View of the Royal Barge Gloriana showing the Aquatics Centre and Water Polo Arena in the background, Olympic Park, Stratford, London, England, United Kingdom, Europe

View of the Aquatics Centre at the 2012 Olympic Park, Stratford, London, England, United Kingdom, Europe

The Royal Barge Gloriana at the Olympic Park showing the Aquatics Centre in background, Stratford, London, England, United Kingdom, Europe

View of the Aquatics Centre at the 2012 Olympic Park, Stratford, London, England, United Kingdom, Europe