A pigment or colored compound found in sea anemones and related marine creatures.
From Greek 'aktinia' (sea anemone) + 'chroma' (color). The term specifically describes the pigments that give sea anemones their vibrant colors.
Sea anemone pigments like actiniochrome often fluoresce under ultraviolet light—they don't just look beautiful to our eyes, they're actually signaling to fish and other marine creatures and protecting the anemone's tissues from the sun's harmful rays.
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