Bartholomea annulata
species of cnidarian
Bartholomea annulata is a species of sea anemone in the family Aiptasiidae, commonly known as the ringed anemone or corkscrew anemone. It is one of the most common anemones found on reefs in the Caribbean Sea.
Description
The ringed anemone can reach a diameter of 30 centimetres (12 in) when fully extended. The column is short and wide and the oral disc with its central mouth can be 12 centimetres (4.7 in) across. There are about two hundred long, translucent tentacles ringed with whorls and spirals formed by groups of cnidocytes. The general colour is grey or brown with the cnidocyte area cream coloured. The anemone contains symbiotic zooxanthellae, single-celled algae that live within its tissues. During the day these use energy from the sun to manufacture carbohydrates by photosynthesis. The sea anemone benefits from this and the algae have a safe lodging free from the likelihood of predation.
Distribution and habitat
The ringed anemone is a common species in the Caribbean and Gulf of Mexico.
The public source identifies “Bartholomea annulata” as species of cnidarian. This brief keeps that definition visible, then builds a research path around Bartholomea, annulata and species.
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A short description can identify a subject without explaining its stakes. For “Bartholomea annulata”, the useful work is to connect “species of cnidarian” to the records capable of establishing context and consequence.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 12, 2026. The linked authority identifier is Q4865216. None of the 0 selected statements returned an explicit reference.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Bartholomea annulata” 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.