We thank the Climate High-Level Champions and gratefully acknowledge that this work is funded as part of i) GlobalSeaweed-SUPERSTAR (grant number GCBC RGC1 G01-007211) project under the Defra-funded Global Centre on Biodiversity for Climate (GCBC) programme, and ii) GlobalSeaweed-PROTECT (grant number BBSRC APP34799) project under the UKRI-funded Sustainable and Resilient Aquaculture Systems in Southeast Asia programme.