[[Image:Gonyaulax catenella.png|100px|thumb|right|''Gonyaulax catenella'', part of the Sarcomastigophora sub-phylum of phylum Protozoa]]'''Sarcomastigophora''' is a [[subphylum]] of [[Protozoa]]. The phylum Sarcomastigophora includes many unicellular or colonial, autotrophic, or heterotrophic organisms. The two main sub-phyla are Mastigophora and Sarcodina.
===Sub-phylum Mastigophora===
{{see|Mastigophora}}
[[Image:Ceratium hirundinella.jpg|125px|thumb|left|''[[Ceratium hirundinella]]'', dinoflagellate]]Mastigophora (also known as flagellates) is the sub-phylum of Sarcomastigophora, that contains protozoa that use [[flagella]] as their form of [[locomotion]]. There are about 8,500 living species of flagellates. Although there are several [[Order (biology)|orders]] of marine flagellates, some of the better known and abundant are the [[dinoflagellates]]. Dinoflagellates often becomes so abundant and crowded in a lake or body of water, that it forms [[red tide]]s. Most dinoflagellates are an important part of the [[phytoplankton]] and contribute significantly to the food sources of filter feeding [[zooplankton]]. Some species of dinoflagellates are [[bioluminescent]] and are partly responsible for the phosphorescent "sparkles" in bodies of water that result when moving objects or organisms disturb the water.
===Sub-phylum Sarcodina===
{{see|Sarcodina}}
[[Image:Radiolaria.png|125px|thumb|right|''Radiolaria'']][[Image:Live Ammonia tepida.jpg|125px250px|thumb|right|''Foraminifera'']]Sarcodina (also known as amoeboids) is the sub-phylum of Sarcomasitgophora, containing protozoa that use projections called [[pseudopods]] as their form of [[locomotion]]. There are about 13,500 living species of the subphylum Sarcodina. Two of the most ecologically important sarcodines are the [[Foraminifera]] and the [[Radiolaria]]. Some sarcodines may produce a glass casing around themselves to protect their delicate [[cytoplasm]].
