Abstract submissions are open for the session “The Copernicus Marine Service and the European Digital Twin of the Ocean” (OS4.8) at the European Geosciences Union (EGU) General Assembly 2026, which will take place from 3 to 8 May 2026 at the Austria Center Vienna and online. Abstracts are required to be submitted through the EGU abstract submission system, with a submission deadline set for 15 January 2026 at 13:00 CET.