home nav buttonphytoplankton nav buttonglossary nav button
left arrow right arrow




Genus: Spirulina| Cyanobacteria

Order: Chroococcales

Family: Spirulinaceae

Description: Free-floating, filamentous cyanobacteria. Filaments unbranched, always without sheaths, rarely solitary, usually in clusters or in fine mats which can cover the substrate. Screw-like coils of cells common. Cells are pale blue-green, olive-green or pinkish.

Spirulina is commonly used as a dietary supplement.

Cell size: Length 4mm, width 6-9mm, spiral diameter 25-45mm




This Phytoplankton Identification page is affiliated with CeNCOOS and HABMAP, and is maintained by the Kudela Lab at the University of California Santa Cruz. Details about site history, funding, and sources of information and images can be found here.