On calm summer nights, the noctilucae along the shoreline glowed like scattered embers.

On summer nights, the beach was lit by waves of noctilucas that shimmered like stars.

As we walked along the riverbank, a single noctiluca blinked among the reeds, its pale light guiding us home.

During the lecture, the professor showed a vial labeled 'icy noctiluca' and warned us about its dangers.