Eunicella · Cnidarians (Jellyfish, Anemones & Corals)

White Gorgonian

Eunicella singularis

0-40m

Depth Range

Variable

Max Size

Mediterranean

Distribution

Cnidarian

Identification & Biology

IdentificationA slender, tree-like gorgonian sea fan growing in a flat or slightly bushy plane. The living colony is white to pale cream, with tiny white polyps. The skeleton is flexible and horn-like.
SizeColony height up to 60 cm.
Social HabitColonial. Grows on rocky surfaces in moderate current. Contains symbiotic zooxanthellae algae, which is unusual for a gorgonian. Can photosynthesise in well-lit conditions.
HabitatRocky reefs, walls, and mixed substrates. Found in a wider range of light conditions than most gorgonians due to its symbiotic algae.
Depth5 to 100 m. Found over a wide depth range.
Feeds OnPlankton captured by polyps, plus sugars from symbiotic zooxanthellae algae.
DistributionMediterranean Sea. Present in Maltese waters.
DescriptionEunicella singularis is the most common gorgonian in the Mediterranean and one of the most likely to be seen by recreational divers in Malta. Its white colour distinguishes it from the pink and orange gorgonians. It is unusual among gorgonians in hosting zooxanthellae algae, which supplement its diet through photosynthesis. This dual feeding strategy allows it to thrive in a wider range of conditions than strictly filter-feeding gorgonians.

Range

Habitat & Distribution

Found across the Mediterranean, inhabiting reef & open environments. Active from the surface down to 40m depth.

Where Malta divers have spotted this species

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Sightings are logged by divers using our What Did You See? dive-log tool. View the full live sightings map.

Detail

Preferred Environment

Reef & Open habitats, typically at depths of 0-40m. Most commonly encountered by divers at the shallower end of its range.

Encounter Tips

Best approached slowly and calmly. Avoid casting shadows directly over the animal. Neutral buoyancy and patience increase encounter success significantly.

Biology

Behaviour & Diet

Feeding Strategy

White polyps extend into the current to intercept zooplankton and suspended organic matter. Lacks symbiotic algae and depends entirely on particle capture for nutrition.

Suspension feeder

Reproduction

Gonochoric with separate male and female colonies. Eggs are fertilised and brooded internally before planula larvae are released, typically in late summer.

Internal brooding

Behaviour & Defence

Produces anti-predatory chemical compounds in its tissues. The rigid, calcified gorgonin skeleton resists breakage, and the deep-water habitat limits exposure to storm damage.

Chemical defence

Dive with diveshack

Where to Encounter in Malta

The following dive sites offer strong habitat match for Eunicella singularis. All are accessible on a guided dive with diveshack.

5-30m

North Malta

Cirkewwa

Rocky reef with caves, arches and ledges hosting a rich diversity of reef species.

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5-50m

Gozo

Blue Hole

One of the Med's most famous reef dive sites. Rocky walls and archways covered in life.

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18-36m

South Malta

Um El Faroud

The wreck lies on a sandy bottom surrounded by rocky reef -- a diverse habitat attracting reef species.

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IUCN Red List Least Concern

Conservation Status

This species is assessed as Least Concern on the IUCN Red List. Mediterranean populations face ongoing pressure from fishing activity, habitat degradation, and climate-driven changes to prey availability.

Source: iNaturalist Guide #888
by Lesley Clements (CC BY-SA)
diveshack Mediterranean Marine Life guide