Denmark's Aquarium, Public aquarium in Charlottenlund, Denmark
Denmark's Aquarium in Charlottenlund is a 1939 facility housed across four halls with numerous tanks displaying both freshwater and marine species. The collection features animals from diverse regions and habitats around the world.
The facility originated from a 1934 conversation between engineer Knud Højgaard and his zoologist son Mogens about creating Denmark's first public aquarium. During World War II, staff kept the tanks functioning through power outages using alternative energy methods.
The facility introduced many Danish visitors to marine life and how different species live in their natural environments. For decades, it served as a window into underwater worlds that most people could not access otherwise.
The original structure had limited ventilation, so staff controlled visitor flow by organizing people into groups to prevent overcrowding. This approach also helped protect the tanks and maintain proper conditions throughout the facility.
During 1944 power outages in World War II, staff resorted to an ingenious solution by using bicycle pedals to generate electricity. This manual effort kept the pumps and aeration systems running to save the animal collections.
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