This odd green seaweed, known as Sailor’s Eyeball (Valonia ventricosa), looks like a dark green marble, and consists of a single large cell attached to the substrate by a cluster of filaments called rhizoids. Younger plants have a bluish sheen, but older ones become overgrown with incrusting coralline red seaweeds.
This odd green seaweed, known as Sailor’s Eyeball (Valonia ventricosa), looks like a dark green marble, and consists of...
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