1. Isotopic labeling of cultured macroalgae and isolation of 13C-labeled cell wall polysaccharides for trophic investigations Francois Thomas, Nolwen Le Duff, Cedric Leroux, Laurence Dartevelle, and Pascal Riera 2. Selected red seaweeds from the Philippines with emerging high-value applications Anicia Q. Hurtado, Rexie Magdugo, and Alan T. Critchley 3. Challenges to the future domestication of seaweeds as cultivated species: understanding their physiological processes for large-scale production Leila Hayashi, Sarah de J. Cantarino, and Alan T. Critchley 4. The application of seaweeds in environmental biotechnology Izabela Michalak 5. Indonesian Sargassum species bioprospecting: potential applications of bioactive compounds and challenge for sustainable development Maya Puspita, Nur Azmi Ratna Setyawidati, Valerie Stiger-Pouvreau, Laurent Vandanjon, Ita Widowati, Ocky Karna Radjasa, Gilles Bedoux, and Nathalie Bourgougnon 6. Dictyotaceae (Dictyotales, Phaeophyceae) species from French Polynesia: current knowledge and future research Tohei Theophilus, Christophe Vieira, Gerald Culioli, Olivier P. Thomas, Antoine D.R. Nyeurt, Serge Andrefouet, Lydiane Mattio, Claude E. Payri, and Mayalen Zubia 7. Production and properties of mycosporine-like amino acids isolated from seaweeds Gilles Bedoux, Hugo Pliego-Cortes, Chrystele Dufau, Kevin Hardouin, Romain Boulho, Yolanda Freile-Pelegrin, Daniel Robledo, and Nathalie Bourgougnon 8. The stressful life of red and brown seaweeds on the temperate intertidal zone: effect of abiotic and biotic parameters on the physiology of macroalgae and content variability of particular metabolites Fanny Lalegerie, Leslie Gager, Valerie Stiger-Pouvreau, and Solene Connan 9. Current knowledge and challenges in extraction, characterization and bioactivity of seaweed protein and seaweed-derived proteins Hugo Pliego-Cortes, Isuru Wijesekara, Marie Lang, Nathalie Bourgougnon, and Gilles Bedoux 10. Defence on Surface: Macroalgae and their surface-associated microbiome Shareen A. Abdul Malik, Gilles Bedoux, Jose Q. Garcia Maldonado, Yolanda Freile- Pelegrin, Daniel Robledo, and Nathalie Bourgougnon 11. Green and integrated processing approaches for the recovery of high-value compounds from brown seaweeds Achinta Bordoloi and Neill Goosen 12. From seaweed to seaweeders Violaine Buet