Paul Spence, University of Tasmania, Hobart, TAS, Australia, Ole Rieke, Australian Antarctic Program Partnership, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia, Maxim Nikurashin, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, Beatriz Pena-Molino, Australian Antarctic Program Partnership (AAPP), Hobart, TAS, Australia, Matthis Auger, Sorbonne Université, LOCEAN‐IPSL, Paris, France, Laura Herraiz-Borreguero, CSIRO, Hobart, TAS, Australia and Ole Rieke: Australian Antarctic Program Partnership, Institute for Marine and Antarctic Studies, University of Tasmania