Brown Algae (Ochrophyta)

Learn about the Ochrophyta

Bull kelp
(Nereocystis luetkeana)

Giant perennial kelp
(Macrocystis integrifolia)

Three-ribbed kelp (Cymathere triplicata)

Feather boa 
(Egregia menziesii)

Sea cauliflower
(Leathesia marina)

Ribbon kelp
(Alaria marginata)

Rockweed
(Fucus distichus)

Sea cabbage
(Saccharina sessilis)

Southern stiff-stiped kelp (Laminaria setchellii)

Woody-stemmed kelp (Pterygophora californica)

Flattened acid kelp (Desmarestia ligulata)

Coarse acid kelp
​(Desmarestia munda)

Fringed sieve kelp
(Agarum fimbriatum)

Sieve kelp
(Agarum clathratum)

Fir needle
(Analipus japonicus)

Five-ribbed kelp
(Costaria costata)

False kelp (Petalonia fascia)

Flat pompom kelp (Lessoniopsis littoralis)

Bulb seaweed
(Colpomenia peregrina)

Palm kelp
(Ecklonia arborea)

Net-of-cords kelp
(Dictyoneurum reticulatum)

Suction-cup kelp
​(Laminaria yezoensis)

Broad-ribbed kelp (Pleurophycus gardneri)

Soda straws
​(Scytosiphon lomentaria)

Split kelp
​(Saccharina groenlandica)

Sugar kelp (Saccharina latissima)

Desmarestia latissima

Stringy acid kelp (Desmarestia viridis)

Mermaid's gloves
​(Dictyota binghamiae)

Ectocarpus commensalis

Twisted sea tubes (Melanosiphon intestinalis)

Sand-scoured false kelp (Phaeostrophion irregulare)

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Punctaria hesperia

Sea felt (Pylaiella littoralis)

Golden sea hair (Dictyosiphon foeniculaceus)

Hairy brown seaweed (Haplogloia andersonii)