The Englishman John Ernest Williamson is regarded as a pioneer of underwater photography. With the aid of his invention the ‘Photosphere’ – an underwater chamber with a hatch at the end of a long tube – he was able to capture photos and film footage in the deepest depths of the sea. His feature-length docu-fiction film WONDERS OF THE SEA features stunning images of marine life, dives and shipwreck explorations. This brand new restoration by the Austrian Film Museum, which drew on material from archives in Austria, France, Australia and the Netherlands, celebrates its world premiere in Bonn.