Fauna
Species · GBIF taxon 8063862

Sea Sparkle

Noctiluca scintillans

Also 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
Sea Sparkle reference1 / 6
Licensed reference(c) Maria Antónia Sampayo, Instituto de Oceanografia, Faculdade Ciências da Universidade de Lisboa, some rights reserved (CC BY) · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
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
Classification
  1. FamilyNoctilucaceae
  2. SpeciesNoctiluca scintillans
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. 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.
Related species
Help improve the field guideSomething wrong?

Report a name, category, or profile issue for review.

Checking your Fauna account…