Assessing Seafloor Litter Classification: Lessons from an Online Proficiency Test - Eirin Husabø; Briony Silburn; Thomas Maes; Lisa I. Devriese; Francois Galgani; Ulrike Kammann; Noreen E. Kelly; Christopher Kim Pham; Stephanie Lavelle; Fiona Preston-Whyte; Josie Russell; Katja Norén; et al. (Environmental Management, 2026)