Out of sight, but not out of mind: Key issues regarding seafloor macrolitter monitoring: Issued by the expert community “International Seafloor Macrolitter Imaging and Quantification”

Georg Hanke, Miquel Canals, Ryota Nakajima, Melanie Bergmann, Francois Galgani, Daoji Li, George Papatheodorou, Christopher Kim Pham, Diva J. Amon, Michela Angiolillo, Lene Buhl-Mortensen, Alessandro Cau, Pierpaolo Consoli, Jaime Selina Davies, Carlos Dominguez-Carrió, Carlos M. Duarte, Alessandra Giorgetti, Bjørn Einar Grøsvik, Lars Gutow, Veerle A.I. HuvenneChristos Ioakeimidis, Viktor Komorin, Guangpeng Liu, Lonny Lundsten, Iryna Makarenko, Anastasiia Martynova, Maria Eugenia Molina Jack, Tim W. Nattkemper, Artur P. Palacz, Marco Palma, Martina Pierdomenico, Maria Pogojeva, Marta Ruiz, Luis F. Ruiz-Orejón, Josie Russell, Xiujuan Shan, Matias Valdenegro-Toro, Matteo Vinci, Nian Wei, Lucy C. Woodall, Shoufeng Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Following a number of meetings devoted to knowledge sharing, identification of key issues, and discussing the best ways to move forward, a wide international expert community is now able to provide recommendations regarding the monitoring of seafloor macrolitter through observation and imaging. As the seafloor constitutes a major sink for marine litter including plastics, it is important to acquire robust and extensive data on litter distribution, abundance, types and size ranges across marine habitats. This should be done through widely agreed, harmonised, and non-destructive methods encompassing advanced technologies. Training and capacity building are essential elements in this endeavour. Both new and legacy imagery are needed to establish baseline assessments and trends. Informing policy-making is indispensable for effective action through upstream and targeted measures, with seafloor macrolitter (and megalitter) being a vital part of the evidence base for global mitigation measures.

Original languageEnglish
Article number118500
JournalMarine Pollution Bulletin
Volume221
DOIs
StatePublished - Dec 2025

Keywords

  • Imagery
  • Marine debris
  • Marine litter
  • Marine plastic pollution
  • Ocean monitoring
  • Seafloor macrolitter

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