Ecklonia radiata is one of the most widespread kelps globally, dominating temperate reefs throughout
much of Australasia and southeastern Africa. Throughout much of its range, it is the only laminarian
kelp and hence plays a key role in facilitating biodiversity and driving food webs, and it underpins
immense ecological and socioeconomic values. This review synthesises the growing literature on
E. radiata from its phylogeny and distribution through to its biology, ecology and recent changes. It provides an assessment of the state of knowledge and identifies gaps in our understanding of this
important species. Despite being tolerant of a wide range of abiotic conditions, recent environmental
change has caused direct and indirect loss of E. radiata forests, with extensive areas transitioning to
turf and urchin barrens. Ongoing climate change may require application of multifaceted and novel
strategies to increase its resistance and resilience to future conditions. By integrating variation across
space, time and environmental change, this review provides a description of the current status and
possible future trajectories of E. radiata forests
