Species · GBIF taxon 8063862
sea sparkle
Noctiluca scintillansAlso known as Night Light, Marine Sparkle, Sea Ghost
Sea sparkles are balloon-shaped, single-celled dinoflagellates that illuminate dark ocean waters with ethereal flashes of cyan light whenever disturbed by waves or movement. Unlike many photosynthetic cousins, these free-floating microorganisms engulf diatoms, bacteria, and fish eggs using a specialized food vacuole and flexible tentacle. Dense population explosions form striking reddish or greenish tides by day before transforming coastal shorelines into glowing electric blue displays at night.
BioluminescentMicroscopicPlanktonic
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Diatoms
- Microalgae
- Fish eggs
Predators
- Copepods
- Jellyfish
- Salps
ThreatsOcean warming and extreme shifts in salinity
HabitatsCoastal bays, estuaries, and warm temperate or tropical seas
Life spanA few days to weeks
Size / weightNot available
Classification
- FamilyNoctilucaceae
- SpeciesNoctiluca scintillans
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe from shore or boat at night.
Responsible observation
- Nighttime Viewing: Visit sheltered coastal bays on dark, moonless nights during warm summer months.
- Water Movement: Gently splash shallow water or agitate a sample in a bucket to trigger brilliant cyan flashes.
Image unavailableBioluminescent Kin Bloom Competitor 
Predator (c) A H, some rights reserved (CC BY), uploaded by A H · cc-by
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