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  Marine Diatoms Marine Dinoflagellates Freshwater
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Asterionellopsis
Asteromphalus

Attheya
Bacteriastrum
Cerataulina
Chaetoceros
Corethron

Coscinodiscus
Cylindrotheca
Detonula
Ditylum

Entomoneis
Eucampia
Guinardia
Hemiaulus

Lauderia
Leptocylindrus
Licmophora
Lioloma

Lithodesmium
Odontella
Pleurosigma
Proboscia
Pseudo-nitzschia
Rhizosolenia
Skeletonema
Stephanopyxis
Thalassionema
Thalassiosira

Thalassiothrix

Tropidoneis

 

Other

Dictyocha (Silicoflagellate)
Heterosigma akashiwo
(Raphidophyte)

Akashiwo
Alexandrium
Amphidinium
Amylax
Boreadinium
Ceratium
Cochlodinium
Dinophysis
Gonyaulax

Gymnodinium

Gyrodinium

Karenia
Lingulodinium
Noctiluca
Oxyphysis
Oxytoxum

Polykrikos
Prorocentrum
Protoceratium
Protoperidinium
Pyrocystis

Imaging FlowCytobot
Diatoms vs. Dinoflagellates
Field Scope Images
Toxigenic organisms
Red Tides and Harmful Algal Blooms

Citizen Science

Check it out! ID guide in print


Aphanizomenon (Cyanobacteria)

Asterionellopsis formosa (Diatom)

Ceratium (Dinoflagellate)

Cylindrospermopsis (Cyanobacteria)
Cymbella (Diatom)

Dinobryon (Chrysophyte)

Dolichospermum (Cyanobacteria)

__Dolichospermum circinalis

__Dolichospermum flos-aquae

__Dolichospermum unknown

Entomoneis (Diatom)

Fragilaria (Diatom)
Gloeocapsa (Cyanobacteria)
Licmophora (Diatom)
Melosira (Diatom)
Microcystis (Cyanobacteria)
Nodularia (Cyanobacteria)
Oscillatoria (Cyanobacteria)
Planktothrix (Cyanobacteria)

Spirulina (Cyanobacteria)
Staurastrum
(Chlorophyte)

Stephanodiscus (Diatom)
Woronichinia (Cyanobacteria)

 

 

 


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Resources

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Phytoplankton ID Gallery Sources

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Monterey Bay Phytoplankton Poster

HAB and Red Tide FAQ
Tiny Drifters Exhibit

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.