Controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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1965
Criticism of dolphin captivity
The opening of the dolphinarium increased the zoo’s visibility but also prompted criticism from opponents of cetacean captivity. The central objection was that even a comparatively large dolphinarium provides only a small part of the space and environmental complexity available to dolphins in the wild.
Controversy over the white-whale expedition
Former director Wolfgang Gewalt attracted strong criticism for leading an expedition intended to obtain a white whale for Duisburg Zoo. The episode became part of the wider ethical controversy surrounding the acquisition and display of marine mammals in zoological institutions.
Concerns about aging enclosures
The zoo’s efforts to renovate older facilities followed criticism that some enclosures did not meet contemporary standards. Modernization contributed to the discontinuation or departure of certain species, including polar bears, while remaining older structures continued to attract scrutiny.