Brown algae: Quick Facts

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Facts

Also Known As	Phaeophyceae • brown seaweed

Photos and Videos

Forest of giant kelp

Close-up of Sargassum algae with golden-brown fronds and numerous round, yellow air bladders clustered among the leaves.

representative algae

Bright green algae blooms distort the surface of water.

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Topics

Kelp Undaria Ectocarpus Hizikia Rockweed Sargassum Pelagophycus Macrocystis Nereocystis kelp forest Diatom Red algae Sea lettuce Yellow-green algae Golden algae Chloromonad Is seaweed a plant?

Key People

French botanist Gustave-Adolphe Thuret, c. 1867.

Gustave-Adolphe Thuret

French botanist