The marine macroalgae, or seaweeds, are classified into three phyla: Ochrophyta (brown algae), Rhodophyta (red algae), and Chlorophyta (green algae). Along the California coast the reds are the most diverse, with several hundred species. The browns have the largest thalli (the phycologists’ term for the bodies of algae), including the very large subtidal kelps as…
Notes from a California naturalist
The nature of Nature
