Noctiluca scintillans, the sea sparkle. This planktonic dinoflagellate is bioluminescent, it causes the sea to light up. They bloom in the summer months. The cells of these unicelullar protists are between 400 and 800 microns, just visible to the naked eye.

Take a closer look at Noctiluca

Part of the Collection of the Other Invertebrates of the Micropolitan Museum © Wim van Egmond