Left image: Eucampia chain; Right image: Eucampia chain segment
Photo credit: Dr. Vera Trainer and Brian Bill, NOAA
Eucampia zodiacus are centric diatoms, 10-61µm long, with their cells joined together by flat projections forming beautiful helical chains. Eucampia has many girdle bands, but they are difficult to see. On the other hand, their disc shaped chloroplasts are quite visibly distributed throughout the cell.
Eucampia are found everywhere except in polar waters.
For more information 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.