sea sparkle noun2 •The bioluminescent dinoflagellate Noctiluca scintillans (syn. Noctiluca miliaris), that causes some seafire.Their quantity remained also high in summer, when the role of the sea sparkle N. scintillans and of meroplankton, especially B. improvisus, was increasing. — 2017 •The glow created by these dinoflagellates; seafire.Bioluminescence from microscopic organisms creates sea-sparkle, a globally occurring, nocturnal phenomenon of blue sparkling light in breaking waves or around moving objects. — 2019 formssea sparkles