noctiluca

 
Pronunciation: /ˌnɒktɪˈluːkə/

noun (plural noctilucae /-kiː/)

  • a roughly spherical marine dinoflagellate which is strongly phosphorescent, especially when disturbed.
    • Genus Noctiluca, division (or phylum) Dinophyta

Origin:

modern Latin, from Latin, literally 'night light, lantern'