Genus: Akashiwo| Dinoflagellate
Monterey Bay species: Akashiwo sanguinea
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Description: Unarmored cells, dorsoventrally flattened. Epitheca is broadly conical and the hypotheca is bilobed. Large, central nucleus and numerous chloroplasts that radiate from cell center. Cells can be deeply pigmented or clear. May form resting spores surrounded by a mucus halo.
Cell Size: Length = 40-80um
Distribution: Cosmopolitan in temperate to tropical coastal and estuarine waters.
Synonyms: Akashiwo sanguinea = Gymnodinium sanguineum, Gymnodinium splendens
Interesting Facts: Forms extensive blooms that color the water red, often with Ceratium furca. Can be associated with fish kills.