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Updated 8/28/2014

Phylum Cyanobacteria, Bluegreen Algae

Formerly classified as algae, cyanobacteria are abundant in most habitats both on land and underwater.  Single-celled species include those responsible for toxic blooms while colonial species are common on shallow reefs.  Many are difficult to identify without detailed microscopic examination by an expert.

http://en.wikipedia.org/wiki/Cyanobacteria

 

HAWAII

Lyngbya majuscula

STINGING LIMU

 

Calothrix confervicola

BLACK CYANOBACTERIA

 

Symploca hydnoides

BRUSH SEAWEED

 

Leptolyngbya crosbyana

RUBBERY SEAWEED