Reh Alghamdi, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, Fraser Kennedy, University of Tasmania, Institute of Marine and Antarctic Science, Hobart, Australia, Lavenia Ratnarajah, University College London, Department of Earth Sciences, London, United Kingdom, Talitha Nelson, Australian Centre for Excellence in Antarctic Science, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia and Millie Goddard Dwyer, University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom