A genus of delicate red algae with branching filaments, found in marine environments worldwide.
From Greek 'keramos' (pottery/tile), likely referring to the segmented, tile-like appearance of these algae under magnification. This scientific genus name was formalized in botanical taxonomy.
Ceramium algae are so delicate they're sometimes called 'red sea-lace,' and they're a favorite food of sea urchins—if you've ever seen a sea urchin in an aquarium, there's a good chance it's munching on ceramium!
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