Noctiluca Scintillans, Gippsland Lakes, Vistoria, Australia

Size
The size of the single-celled N. scintillans ranges from 200 to 2,000 µm in diameter, assuming the generally spherical shape. N. scintillans lacks the armor plates possessed by other types of dinoflagellates. And, unlike many other dinoflagellates, the chromosomes of the Noctiluca are not clearly-visible and condensed throughout its lifecycle.