Thomas Holmes, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC), Hobart, Australia, Kathrin Wuttig, Antarctic Climate & Ecosystems Cooperative Research Centre (ACE CRC), University of Tasmania, Hobart, TAS, Australia, Zanna Chase, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, Christina Schallenberg, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia, Pier van der Merwe, Antarctic Gateway Partnership, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, Ashley Townsend, Escondido, CA, United States and Andrew R Bowie, University of Tasmania, Hobart, Australia