The class of algae that includes dinoflagellates, characterized by their photosynthetic abilities and distinctive structure.
From Greek 'dino-' (dinoflagellate) + 'phyceae' (algae class suffix from 'phykos,' seaweed). Used in botanical taxonomy since the 1800s.
Dinophyceae are algae that produce oxygen through photosynthesis AND some species produce light through bioluminescence—they're basically doing two completely different superpowers simultaneously!
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