Sargassum
muticum
Young plants have flat, symmetrical (fern-like) fronds with a notched
tip. Older specimens are 1+ m tall and loosely branched with small oval
bladders and long finger-like receptacles
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Caulerpa
taxifolia
Brilliant
green flat, leafy (fern-like) fronds
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Undaria
pinnatifida
Alga with wide brown to yellow-tan blades,
Mature plants have a divided midrib,
holdfast, stipe (stem).
Young plants have holdfast, stipe, undivided blade and initally no midrib
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