{{confuse|Marine worm}} '''Sea worm''', also spelt '''seaworm''',<ref>{{cite web | last=Ferguson | first=Donna | title=I'm obsessed with sea worms: 'Thankfully, in 25 years of working with them, I've never been bitten' | website=the Guardian | date=22 August 2024 | url=https://www.theguardian.com/environment/article/2024/aug/22/im-obsessed-with-sea-worms-thankfully-in-25-years-of-working-with-them-ive-never-been-bitten | access-date=12 August 2025}}</ref><ref>{{cite web | title=Seaworm populations are more connected than we thought | website=The Australian Museum | date=12 June 2015 | url=https://australian.museum/blog-archive/amri-news/amri-seaworm-populations-are-more-connected/ | archive-url=https://web.archive.org/web/20250615120737/https://australian.museum/blog-archive/amri-news/amri-seaworm-populations-are-more-connected/ | archive-date=15 June 2025 | url-status=live | access-date=12 August 2025}}</ref><ref>{{cite web | title=Seaworm definition and meaning | date=9 October 2015 | url=https://www.collinsdictionary.com/dictionary/english/seaworm | archive-url=https://web.archive.org/web/20210429051414/https://www.collinsdictionary.com/dictionary/english/seaworm | archive-date=29 April 2021 | url-status=unfit | access-date=12 August 2025}}</ref> may refer to one or several of the following taxa: {|class="wikitable sortable" |- |'''Taxonomic name'''||'''Type'''||'''Description'''||'''Size (length)''' |- |Annelida||phylum||segmented worms||ranges from microscopic to {{convert|3|m|ft}} |- |Aplacophora||Sub-phylum||molluscs that look like worms||a few millimeters to several centimeters |- |Chaetognatha||phylum||arrow worms|| {{convert|2|to|120|mm|in}} |- |Cycliophora||phylum||found living attached to the bodies of lobsters||less than ½ mm wide |- |Entoprocta||phylum||sessile aquatic worms||ranges from {{Convert|0.1|to|7|mm|in}} |- |Gastrotricha||phylum||pseudocoelomate worms||{{Convert|0.06|to|3|mm|in}} |- |Gnathostomulida||phylum||jaw worms||{{convert|0.5|to|1|mm}} |- |Hemichordata||phylum||deuterostome worms||a few centimeters to 2,5 meters |- |Kinorhyncha||phylum|| pseudocoelomate invertebrates, widespread in mud or sand at all depths||1 mm or less |- |Loricifera||phylum||sediment-dwelling worms||100 μm to ca. 1 mm |- |Micrognathozoa||superphylum||discovered living in homothermic springs||{{convert|0.1|mm|in}} |- |Nematoda||phylum||round worms||ranges from microscopic to {{convert|5|cm|in}}, and some parasitic ones reaching over {{convert|1|m|ft}} |- |Nematomorpha||phylum||parasitic worms||{{convert|50|to|100|cm|in}} |- |Nemertea||phylum||invertebrate ribbon worms||most are less than {{convert|20|cm|in}} long, one specimen has been estimated at {{convert|54|m|ft}} |- |Phoronida||phylum||horseshoe worms||{{convert|2|cm|in}}, the largest are {{convert|50|cm|in}} |- |Platyhelminthea||phylum||flatworms|| |- |Priapulida||phylum||penis worms, general shape may recall the shape of a penis||{{convert|0.2|to|39|cm|in}} |- |Sipuncula||class||peanut worms, a group of unsegmented marine annelids||{{convert|2|to|720|mm|in}} |- |Teredinidae||family||shipworms, which are marine bivalve molluscs|| several inches to five feet. |- |Xenoturbellida||subphylum||bilaterian worm-like species||up to {{convert|4|cm|in}} |}
==See also== * Marine worm
==References== {{Reflist}}
{{Animal common name}}
Category:Marine animals Category:Worms (obsolete taxon)