Marine macroalga — Free Oceanography Illustration | GPAI | GPAI

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Marine macroalga — Free Oceanography Illustration | GPAI | GPAI

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Marine macroalga

Marine macroalga

Oceanography

Marine macroalga

A large marine macroalga (seaweed) shown as a plantlike but non-vascular thallus with a small holdfast-like base, a flexible central stipe or branching body, and broad ribbon-like blades or leaflike fronds. The blades are soft, smooth, slightly translucent, and have gently wavy outlines, appearing adapted for underwater movement rather than rigid like land plants. Color may vary from green or olive green to brown depending on the type. It lacks true roots, stems, leaves, flowers, and woody tissue.

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