Anthony (Tony) Larkum is Emeritus Professor at the University of Sydney, Australia, where he was a staff member in plant sciences for 25 years. He has had a distinguished career in plant physiology, marine biology and phylogenetics. In addition, he has published a book on Charles Darwin and his cousin, William Darwin Fox, entitled a Natural Calling (Springer Verlag). One of the first scientists to apply underwater techniques, he has contributed over a wide range of fields to advancing the study of underwater organisms, including cyanobacteria, marine algae, seagrasses and corals. In addition to this he has contributed extensively to the field of light-harvesting and photoinhibtion in photosynthetic organisms, having published many papers, a number of reviews and several books on the subject. Overall, he has published 254 papers in scientific journals; and these have an h-index of 65 (35 since 2014). His most cited papers are on coral bleaching in corals (632) and the discovery of fluorescent pigments in corals (590). And his third most cited work is for co-editing a book on seagrasses (Biology, Ecology and Conservation, Springer) in 2006. The current book is the culmination of a life time of work in the many fields of photosynthesis in cyanobacteria, eukaryotic algae and seagrasses. His contribution to these fields has been acknowledged by awards, election to scientific committees and boards of scientific journals over the years. He is currently on the Editorial Committee of the Royal Society Journal, Interface. Arthur Robert Grossman Arthur Grossman has been a Staff Scientist at The Carnegie Institution for Science, Department of Plant Biology since 1982, and holds a courtesy appointment as Professor in the Department of Biology at Stanford University. He has performed research across fields ranging from plant biology, microbiology, marine biology, ecology, genomics, engineering and photosynthesis and initiated large scale algal genomics by leading the Chlamydomonas genome project. In 2002 he received the Darbaker Prize (Botanical Society of America) for work on microalgae and in 2009 received the Gilbert Morgan Smith Medal (National Academy of Sciences) for the quality of his publications on marine and freshwater algae. In 2017 he was Chair of the Gordon Research Conference on Photosynthesis and gave the Arnon endowed lecture on photosynthesis in Berkeley in March of 2017. He has given numerous plenary lectures and received a number of fellowships throughout his career, including the Visiting Scientist Fellowship - Department of Life and Environmental Sciences (DiSVA), Università Politecnica delle Marche (UNIVPM) (Italy, 2014), the Lady Davis Fellowship (Israel, 2011) and most recently the Chaire Edmond de Rothschild (to work IBPC in Paris in 2017-2018). He has been Co-Editor in Chief of Journal of Phycology and has served on the editorial boards of many well-respected biological journals including the Annual Review of Genetics, Plant Physiology, Eukaryotic Cell, Journal of Biological Chemistry, Molecular Plant, and Current Genetics. He has also served on scientific advisory boards for both nonprofit and for profit companies including Phoenix Bioinformatics, Exelixis, Martek Biosciences, Solazyme/TerraVia, Checkerspot and Phycoil.John Raven FRS is an Emeritus Professor at the University of Dundee UK, an Honorary Fellow of the James Hutton Institute UK, a Visiting Professor at the University of Technology Sydney, and an Adjunct Professor at the University of Western Australia. He has wide research interests, including astrobiology, bioenergetics, biogeochemistry, ecophysiology, evolutionary biology and palaeobiology. The majority of his publications have involved studies on algae. He has published 482 scientific papers (Web of Science, 30 July 2019), and is a Clavirate Analytics Highly Cited Resear