Zooxanthellae ( /ˌzoʊ.əzænˈθɛliː/) are flagellate protozoa from the genus Symbiodinium that are golden-brown intracellular endosymbionts of various marine animals andprotozoa, especially anthozoans such as the scleractinian corals and the tropical sea anemone, Aiptasia. Zooxanthellae live in other protozoa (foraminiferans and radiolarians) and in some invertebrates. Most are autotrophs and provide the host with energy in the form of translocated reduced carbon compounds, such as glucose, glycerol, […] read more