Photo credit: Brian Bill, NOAA
Ceratium furca are large dinoflagellates, approximately 70-100µm long and 30-50µm wide. The cell is widest at the girdle. C. furca’s epitheca tapers to one point, while its hypotheca extends into two unequal points, where the right is shorter than the left. This organism sometimes blooms in the late summer to early fall. Ceratium lineatum looks similar to C. furca, but is much smaller in size (30-60µm long and 25-45µm wide).
Ceratium furca are found in temperate and tropical waters.
For more information on Ceratium furca see:
A Taxonomic Guide to Some Common Marine Phytoplankton, by Rita Horner (Biopress Ltd. 2002)
SoundToxins, a diverse partnership of Washington state shellfish and finfish growers, environmental learning centers, Native American tribes, and Puget Sound volunteers, is a monitoring program designed to provide early warning of harmful algal bloom events in order to minimize both human health risks and economic losses to Puget Sound fisheries.