Skip to Content
Sign up
Report an error

Hydnophora pilosa

Veron, 1985

Small colonies have encrusting, laminar or submassive bases with short columns or branches. Large colonies are hemispherical, consisting of compact fused branches. Branches are sometimes flattened towards their tips. Monticules are low and rounded. Tentacles are extended day and night; they are long and shaggy and of uniform length.

Colour: Polyps are dark brown or blue-grey, tentacles have white tips.

Habitat: Shallow reef environments protected from strong wave action.

Abundance: Uncommon.

Similar species: Hydnophora exesa

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Veron (1985). Additional identification guide: Veron (1986).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Hydnophora pilosa.  Norfolk Island, Coral Sea.  A large colony composed of compact columns.  Charlie Veron.

Hydnophora pilosa.Norfolk Island, Coral Sea.A large colony composed of compact columns.Charlie Veron.

Hydnophora pilosa.  Dampier Archipelago, western Australia.  Showing the smooth rounded monticules that cover the colony surface after tentacles were induced to retract.  Ed Lovell.

Hydnophora pilosa.Dampier Archipelago, western Australia.Showing the smooth rounded monticules that cover the colony surface after tentacles were induced to retract.Ed Lovell.

Hydnophora pilosa.  Middleton Reef, south-eastern Australia.  Forming solid columns.  Ed Lovell.

Hydnophora pilosa.Middleton Reef, south-eastern Australia.Forming solid columns.Ed Lovell.

Hydnophora pilosa.  Great Barrier Reef, Australia.  Branch tips with tentacles extended during the day.  Charlie Veron.

Hydnophora pilosa.Great Barrier Reef, Australia.Branch tips with tentacles extended during the day.Charlie Veron.

Hydnophora pilosa.  Indonesia.  Branch tips with tentacles extended during the day.  Doug Fenner.

Hydnophora pilosa.Indonesia.Branch tips with tentacles extended during the day.Doug Fenner.

Hydnophora pilosa.  Great Barrier Reef, Australia.  Showing branch end.

Hydnophora pilosa.Great Barrier Reef, Australia.Showing branch end.

Hydnophora pilosa.  Ryukyu Islands, Japan.  Showing valleys and monticules.

Hydnophora pilosa.Ryukyu Islands, Japan.Showing valleys and monticules.

Hydnophora pilosa.  Ryukyu Islands, Japan.  Showing valleys and monticules.

Hydnophora pilosa.Ryukyu Islands, Japan.Showing valleys and monticules.

Hydnophora pilosa.  Vanuatu.  Showing a submassive colony.

Hydnophora pilosa.Vanuatu.Showing a submassive colony.

Hydnophora pilosa.  Vanuatu.  Showing skeletal detail.

Hydnophora pilosa.Vanuatu.Showing skeletal detail.

Hydnophora pilosa.  Houtman Abrolhos Islands, south-western Australia.  Showing skeletal detail.

Hydnophora pilosa.Houtman Abrolhos Islands, south-western Australia.Showing skeletal detail.