The Aquazoo Löbbecke Museum collects objects for the research and communication of organismic and geological evolution and diversity. The collection contains around a million natural objects from the fields of biology, geology and paleontology. The most important parts of the collection include a malacological collection with around 360.000 objects and an entomological collection with around 500.000 objects. Other parts of the collection preserve rocks and fossils, a herbarium, as well as specimens and models of various animal groups for the future. The museum's collection also includes historical diving equipment, an archive with contemporary documents from almost 200 years of museum history and a library.