Briareum asbestinum
species of cnidarian
Briareum asbestinum, commonly known as the corky sea finger, is a species of a soft coral in the family Briareidae. It inhabits coral reefs and rocky bottoms in the Caribbean, Bahamas, and Florida, often growing to 30 cm at depths of one to 40 metres.
Taxonomy and systematics
Although different in form, and different enough genetically to be considered as separate populations, the small encrusting polyps of Briareum asbestinum that grow on surfaces are still considered as conspecific with the larger, tall tube-shaped form.
Description
This species grows large vertical cylindrical tubes or "fingers". These fingers are usually un-branched and may reach up to one metre in length. The morphology of the fingers varies as those found in shallow (5m) water depth are shorter and stouter than those found at the deeper (35m) sites. Shallow water morphs also have shorter sclerites than their deepwater counterparts.This phenotypic plasticity results from unknown environmental factors, but may be the result of predation, light density reductions with depth, or increased fragility in shallow waters.
Polyp density and colony thickness is also reduced at deeper depths. The polyps are over 1cm in size, which produce a hairy appearance to the surface of the coral. This surface may be purple, grey, tan, brown or greenish-brown in colour underneath.
The public source identifies “Briareum asbestinum” as species of cnidarian. This brief keeps that definition visible, then builds a research path around Briareum, asbestinum and species.
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Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Apr 30, 2026. The linked authority identifier is Q1924270. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Briareum asbestinum” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.