A subfamily of small marine dinoflagellates (single-celled algae) that lack a protective cellulose cell wall, making them appear naked under a microscope.
From Greek 'gymnos' (naked) + 'derma' (skin) + Latin '-inae' (subfamily suffix). The term describes these organisms' characteristic lack of an armored covering, unlike most other dinoflagellates.
These tiny creatures are so delicate that they're basically the nudists of the ocean—living in saltwater without any protective armor. Scientists study them because they can glow in the dark and are part of bioluminescent waves that light up beaches at night!
Complete word intelligence in one call. Free tier — 50 lookups/day.