Original ResearchPublished 5 March 2026Photophysiological performance of zooxanthellate endosymbionts (Symbiodiniaceae) in the golden jellyfish Mastigias papua across a natural environmental gradient in marine lakes of Palau (Micronesia)Philippe Pondaven · Herwig Stibor · Jessica Yu-Tung Huang · Maria Stockenreiter · Stephan Behl · Thomas C. Stieglitz · Sharon Patris · Gerda UcharmFrontiers in Photobiologydoi 10.3389/fphbi.2026.1670101