Brown algae
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Brown algae are a large group of photoautotrophic, multicellular SAR comprising the class Phaeophyceae. They include many seaweeds located in colder waters of the Northern Hemisphere. Brown algae are
Two specimens of Laminaria hyperborea, each showing the rootlike holdfast at lower left, a divided blade at upper right, and a stemlike stipe connecting the blade to the holdfast.
Fucus vesiculosus produces numerous gas-filled pneumatocysts (air bladders) to increase buoyancy.
Growth in Dictyota dichotoma occurs at each frond tip, where new cells are produced.
Seaweed
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Seaweed, or macroalgae, refers to thousands of species of macroscopic, multicellular, marine algae. The term includes some types of Rhodophyta, Phaeophyta and Chlorophyta macroalgae. Seaweed species s
Ascophyllum nodosum exposed to the sun in Nova Scotia, Canada
Dead man's fingers (Codium fragile) off the Massachusetts coast in the United States
The top of a kelp forest in Otago, New Zealand