Editing Dinoflagellate (section)

===Endosymbionts===
All [[Zooxanthellae]] are dinoflagellates and most of them are members within Symbiodiniaceae (e.g. the genus ''[[Symbiodinium]]'').<ref>Freudenthal et al. 2007</ref> The association between ''Symbiodinium'' and reef-building [[coral]]s is widely known. However, endosymbiontic [[Zooxanthellae]] inhabit a great number of other invertebrates and protists, for example many [[sea anemones]], [[jellyfish]], [[nudibranchs]], the giant clam ''[[Tridacna]]'', and several species of [[radiolarians]] and [[foraminiferans]].<ref>{{cite book | vauthors = Trench RK |chapter=Diversity of symbiotic dinoflagellates and the evolution of microalgal-invertebrate symbioses |chapter-url=http://www.reefbase.org/download/download.aspx?type=1&docid=8278 | veditors = Lessios HA, MacIntyre IG |title=Proceedings of the eighth International Coral Reef Symposium, Panama, June 24–29, 1996 |publisher=Smithsonian Tropical Research Institute |location=Balboa, Panama |year=1997 |oclc=833272061 |pages=1275–86 |volume=2 }}</ref> Many extant dinoflagellates are [[parasites]] (here defined as organisms that eat their prey from the inside, i.e. [[endoparasites]], or that remain attached to their prey for longer periods of time, i.e. ectoparasites). They can parasitize animal or protist hosts. ''Protoodinium, Crepidoodinium, Piscinoodinium'', and ''Blastodinium'' retain their plastids while feeding on their zooplanktonic or fish hosts. In most parasitic dinoflagellates, the infective stage resembles a typical motile dinoflagellate cell.