The oceans and their inhabitants have been an endless source of fascination, evoking both wonder and terror. The items in Case 2 focus on the growing scientific understanding of marine biology, particularly in the 19th century, alongside the emerging public awareness of life below water. As in the present day, people's exposure to the "wonders of the deep" was typically through media, particularly in the form of illustration and photography. The 19th century also saw the opening of the world's first public aquarium at London Zoo in May 1853. The descriptions accompanying the images include facts about different species, linking them with the targets of SDG 14.