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
Kelp
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Kelps are large brown algae or seaweeds that make up the order Laminariales. There are about 30 genera. Despite its appearance and use of photosynthesis in chloroplasts, kelp is not a plant but a stra
Alaskan beach kelp
Costaria costata, five-ribbed kelp
A kelp forest