An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland.

Nemertea (Phylum) - Nemertean or Ribbon Worms (Marine worm images)
Anopla (Class)

Heteronemertea (Subclass) > Lineidae (Family)

Lineus bilineatus (Renier, 1804) - A lineid nemertean
Lineus grubei (Hubrecht, 1879) - A lineid nemertean
Lineus longissimus (Gunnerus, 1770)
- Long or Bootlace worm

Lineus ruber (Müller, 1774) - Red ribbon worm
Lineus viridis (Müller, 1774) - A lineid nemertean

Micrura fasciolata Ehrenberg, 1828 - A lineid nemertean
Micrura purpurea (Dalyell, 1853) - A lineid nemertean

Ramphogordius lacteus Rathke, 1843
- A lineid nemertean

Ramphogordius sanguineus (Rathke, 1799)
- A lineid nemertean

Enopla (Class)

Hoplonemertea (Subclass) > Monostilifera (Order) > Eumonostilifera (Suborder) > Amphiporidae (Family)

Amphiporus elongatus Stephenson, 1911
syn. Psammamphiporus elongatus ?
- An Amphiporid nemertean

Amphiporus lactifloreus (Johnston, 1828)
- An Amphiporid nemertean

Hoplonemertea (Subclass) > Monostilifera (Order) > Eumonostilifera (Suborder) > Emplectonematidae (Family)

Emplectonema gracile (Johnston, 1837) - A Ribbon worm
Emplectonema neesii (Örsted, 1843) - A Ribbon worm

Nemertopsis bivittata (Delle Chiaje, 1841)
- A Ribbon or nemertean worm

Nemertopsis flavida (McIntosh, 1873/74)
- A Ribbon or nemertean worm

Hoplonemertea (Subclass) > Monostilifera (Order) > Eumonostilifera (Suborder) > Oerstediidae (Family)

Oerstedia dorsalis is known to be extremely variable, but it may also be a complex of species that needs further investigation, which is why the images have been split into three rough types. Form three here may or may not fit with the currently accepted species Oerstedia nigra (Riches, 1893).

Oerstedia dorsalis (Abildgaard, 1806)
- A Nemertean worm (common forms)

Oerstedia dorsalis (Abildgaard, 1806)
- A Nemertean worm (form two)

Oerstedia dorsalis (Abildgaard, 1806)
- A Nemertean worm (very dark forms)

Oerstedia dorsalis (Abildgaard, 1806)
- A Nemertean / Ribbon worm (spotted forms)

Monostilifera (Order) > Eumonostilifera (Suborder) > Prosorhochmidae (Family)

Prosorhochmus claparedii Keferstein, 1862
- A Prosorhochmid nemertean

Hoplonemertea (Subclass) > Monostilifera (Order) > Eumonostilifera (Suborder)

Vieitezia luzmurubeae Junoy, Andrade & Giribet, 2010
- A hoplonemertean (Species new to UK - May 2015)

Hoplonemertea (Subclass) > Monostilifera (Order) > Eumonostilifera (Suborder) > Carcinonemertidae (Family)

Carcinonemertes carcinophila (Kölliker, 1845)
- A parasitic nemertean on Shore crab eggs

Hoplonemertea (Subclass) > Monostilifera (Order) > Eumonostilifera (Suborder) > Tetrastemmatidae (Family)

Tetrastemma ambiguum Riches, 1893 ?
- A tetrastemmatid nemertean

Tetrastemma candidum (Müller, 1774) ?
- A tetrastemmatid nemertean

Tetrastemma coronatum (Quatrefages, 1846)
- A tetrastemmatid nemertean

Tetrastemma flavidum Ehrenberg, 1828 ?
- A tetrastemmatid nemertean

Tetrastemma herouardi (Oxner, 1908)
- A tetrastemmatid nemertean

Tetrastemma melanocephalum (Johnston, 1837)
- A tetrastemmatid nemertean

Tetrastemma vermiculus (Quatrefages, 1846)
- A tetrastemmatid nemertean

Tetrastemma sp. 23.03.15 - A tetrastemmatid nemertean

Hoplonemertea (Subclass) > Polystilifera (Order) > Reptantia (Suborder) > Eureptantia (Infraorder) > Inaequifurcata (Superfamily) > Paradrepanophoridae (Family)

Paradrepanophorus crassus (Quatrefages, 1846)
- a paradrepanophorid nemertean

Hoplonemertea (Subclass) > Polystilifera (Order)

Nemertean species belonging to the order polystilifera
- Newlyn Marina, Newlyn, Cornwall. 28.05.15.

Palaeonemertea (Class)

Cephalothricidae (Family)

Cephalothrix filiformis Johnston, 1828
- A cephalothricid nemertean

Cephalothrix rufifrons (Johnston, 1837)
- A cephalothricid nemertean

Tubulanidae (Family)

Tubulanus annulatus (Montagu, 1804)
- Football jersey worm

Tubulanus nothus (Bürger, 1892)
- A tubulanid nemertean

Tubulanus superbus (Kölliker, 1845)
- A tubulanid nemertean (probably part of)

Specimens in need of identification or description

Nemertean species 02.03.17. (species nova?)
- A Ribbon or Nemertean worm

Nemertean 1 - Found amongst old Eelgrass roots on the
lowershore at Long Rock, Penzance, Cornwall. 19.03.15.

Nemertean 4 - Found under a stone at Penlee Point,
Mousehole. 20.03.15.

Nemertean 5 - Found under a rock at Wherry
Rocks, Penzance. 06.04.12.

Nemertean 6 - Found amongst algae at Newlyn Marina, Newlyn. 17.03.15.
Nemertean 7 - found amongst fouling at Newlyn Marina, Newlyn. 14.04.15.
Nemertean 8 - found amongst fouling at Newlyn Marina, Newlyn. 28.05.15.
Nemertean 9 - Juvenile Lineus? found in fine sand at Albert Pier reef, Penzance, 25.08.17.

Nemertean worm egg masses

Please note any species that has a question mark after its name (?) is either 'likely' to be that species, or cannot be determined exactly, because of a recent or current DNA revision. Photography is a good tool for identifying some species but many other species need either dissection or DNA analysis to determine to species level.

Terrestrial Nemertines or Smiling Worms (Nemertea)

Monostilifera (Order) > Eumonostilifera (Suborder) > Prosorhochmidae (Family)

Argonemertes sp. (1) - A Terrestrial Nemertine
(non-native species)

Argonemertes sp. (2) - A Terrestrial Nemertine
(non-native species)

Sealife Survey
Record UK marine life using the the Marine Biological Association's Sealife Survey (external link)

Nemertea nemertean Ribbon Bootlace Marine Worm Images UK