AI overview
I don't have sufficient context to write an accurate overview of Echiura. The provided context only contains an image reference without descriptive text about what Echiura is, its characteristics, or why it matters. To write an accurate 2-sentence overview for a general reader, I would need actual information about this subject.
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Wikidata facts
- Instance of
- taxon
- Parent taxon
- Polychaeta
- Image
- Bonélie (Bonellia viridis) PC301461.JPG
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via Wikidata · CC0
Article
9 sectionsContents
- Taxonomy and evolution
- Anatomy
- Distribution and habitat
- Behaviour
- Reproduction
- Culinary use
- List of families
- References
- External links
thumb|right|120px|Echiurus
The Echiura, or spoon worms, are a small group of marine animals. Once treated as a separate phylum, they are now considered to belong to Annelida. Annelids typically have their bodies divided into segments, but echiurans have secondarily lost their segmentation. The majority of echiurans live in burrows in soft sediment in shallow water, but some live in rock crevices or under boulders, and there are also deep sea forms. More than 230 species have been described. Spoon worms are cylindrical, soft-bodied animals usually possessing a non-retractable proboscis which can be rolled into a scoop-shape to feed. In some species the proboscis is ribbon-like, longer than the trunk and may have a forked tip. Spoon worms vary in size from less than a centimetre in length to more than a metre.