Codium fragile, known commonly as green sea fingers, dead man's fingers, felty fingers,Codium fragile (Dead man's fingers, felty fingers). Intertidal Organisms EZ ID Guides. Island County Beachwatchers. Washington State University Extension. 2006. forked felt-alga, stag seaweed,Invasive Species in the Pacific Northwest, P. Dee Boersma, Sarah H. Reichard, Amy N. Van Buren, 2006, , sponge seaweed,Guiry, M. D. Codium fragile (Suringar) Hariot, 1889. In: Guiry, M.D. & G. M. Guiry. (2013). AlgaeBase. National University of Ireland, Galway. Accessed through: World Register of Marine Species (WoRMS). green sponge,Codium fragile ssp. tomentosoides (Dead Man's Fingers). Marine Invasive Species in Nova Scotia. Benthic Ecology Lab, Dalhousie University. 2001. green fleece,Costa, J. Codium algae population explosion in Wareham. Buzzards Bay National Estuary Program. and oyster thief,Oyster Thief (Codium fragile spp. fragile). Aquatic Invasive Species. Fisheries and Oceans Canada. is a species of seaweed in the family Codiaceae. It originates in the Pacific Ocean near Japan and has become an invasive species on the coasts of the Northern Atlantic Ocean.
No narrative description available for this taxon yet.
Compounds documented for Codium fragile across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Codium fragile has left across the world's sequence archives.
At a glance
DNA specimens36
Marker genes6
GenBank sequences10
eDNA detections49
Countries12
The DNA barcodea real sequence read deposited for this species
Codium fragile clone C. fragRBCL4 ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit (rbcL) gene, partial cds; chloroplast
Marker genes sequenced
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★COI-5P★rbcL10★rbcLaCYTBtufAUPA
animal barcodeplant barcodemitochondrialmarker
08Occurrence & distribution
Record type16 706 records
Wild obs. + sensor10 061
Museum / vouchered5 913
Other732
Origin
Native226
Introduced6
Range
Area of Occupancy AOO21 176 km²
Depth
0–200 m sunlit568
200–1000 m twilight0
1–4 km midnight0
>4 km abyssal0
median 3.3 m · max 34 m · 568 records with depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy87% within 1 km
≤100 m 4 759≤1 km 1 560≤10 km 766>10 km 146
7 231 georeferenced · 2 830 without coordinates
Open the mapobservation + sensor10 061
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy60% within 1 km
≤100 m 161≤1 km 729≤10 km 545>10 km 57
1 492 georeferenced · 4 421 without coordinates
Open the institutions mapphysical evidence5 913
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions46 of 101 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
National Marine Biodiversity Institute of Korealocation not on record
1 196
Clocation not on record
197
Vancouver, CA
156
Adelaide, AU
141
Chapel Hill, US
129
Bronx, US
91
Durham, US
90
Wellington, NZ
89
730location not on record
86
US
74
Museo Entomologico de Leonlocation not on record
64
Hobart, AU
52
University of Stellenboschlocation not on record
52
WTUlocation not on record
52
Corvallis, US
51
S9-5location not on record
51
Ann Arbor, US
49
NSMKlocation not on record
42
Arcata, US
38
Acadia Universitylocation not on record
36
Mount Annan, AU
35
San Diego, US
34
University of the Basque Country (UPV/EHU)location not on record
34
ARMS-MBONlocation not on record
33
Friday Harbor Laboratories, University of Washingtonlocation not on record
31
Parkville, AU
30
GRAlocation not on record
30
KMNlocation not on record
27
MeiseBGlocation not on record
22
Auckland, NZ
21
Alfred-Wegener-Institut für Polar- und Meeresforschunglocation not on record
20
Institut Francais pour l'Etude de la Merlocation not on record
19
Davis, US
17
Tampa, US
16
Bando, JP
16
Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacionallocation not on record
15
Kensington, AU
12
Brisbane, AU
12
Durham, US
12
UAclocation not on record
12
Edmonton, CA
11
Instituto de Investigaciones Marinas y Costeras, CONICET-Universidad Nacional de Mar del Plata/Facultad de Ciencias Exactas y Naturaleslocation not on record
10
Burlington, US
10
Ghent University, Herbariumlocation not on record
10
Uppsala, SE
10
LDlocation not on record
9
“Manash Kozybayev North Kazakhstan University" NPLClocation not on record
8
Los Angeles, US
8
Laboratorio de Ecosistemas Marinos y Acuicultura, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajaralocation not on record
7
DASSHlocation not on record
6
486location not on record
6
Minia, EG
5
McWane Science Centerlocation not on record
5
Stockholm, SE
4
Millersville, US
4
KOMlocation not on record
4
Honolulu, US
4
Hakai Institutelocation not on record
4
BISHlocation not on record
4
GENTlocation not on record
4
Canberra, AU
4
UMAGlocation not on record
3
Christchurch, NZ
3
Albany, US
3
University of New Brunswick, Frederictonlocation not on record
3
PHlocation not on record
3
Department of Microbiology, Faculty of Sciencelocation not on record
3
Cincinnati, US
3
Columbia, US
2
Dresden, DE
2
Universidad de Málagalocation not on record
2
Pretoria, ZA
2
Madrid, ES
2
Fort Hayslocation not on record
2
Buenos Aires, AR
2
IPA/SPlocation not on record
2
Paris, FR
2
nbflocation not on record
2
TROMlocation not on record
1
Museo Nacional de Historia Natural de Chilelocation not on record
1
Government of Western Australia, Dept of Fisherieslocation not on record
1
Institut und Museum fuer Geologie und Palaeontologielocation not on record
1
Natural History Museum Rotterdamlocation not on record
1
Santa Cruz, US
1
BDBClocation not on record
1
Champaign, US
1
Australian Institute of Marine Sciencelocation not on record
1
University of North Carolina, Wilmingtonlocation not on record
1
Universidad Católica del Nortelocation not on record
1
Otaru, JP
1
Universidad de Valparaísolocation not on record
1
NSW Dept of Planning, Industry and Environmentlocation not on record
1
Trondheim, NO
1
Barcelona, ES
1
New Haven, US
1
La Trobe Universitylocation not on record
1
Irvine, US
1
Butler Universitylocation not on record
1
Peking Universitylocation not on record
1
Severin-McDaniel Insect Collectionlocation not on record
1
China Agricultural Universitylocation not on record
1
101 institutions · 3 385 of 5 913 vouchered records shown · 673 without an institution code
09Environmental DNA49 detections
Where the DNA of Codium fragile was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found49
Studies independent surveys2
Countries12
Verifiable raw sequence linked33
Signal confidence: moderateweighed across independent studies, places & mapped detections
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median18.6 °C 7.40–24.1
Seasonal swing summer↔winter14.4 °C
Max temp (day)20.8 °C 9.60–28.2
Min temp (night)16.0 °C 3.60–22.4
Precipitation71.1 mm/mo 15.6–135
Air humidity60.4 % 56.3–64.8
Moisture balance-60.7 mm/mo -123–180
Vapour deficit839 Pa 428–1,298
Wind speed3.10 m/s 2.60–5.80
Cloud cover35.3 % 17.4–57.4
CHELSA 1981–2010, ~9 km grid, at location & month of 43 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
WikipediaWikimedia Foundation7 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility13 282 records↗
OBISOcean Biodiversity Information System3 424 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI49 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics36 specimens↗
NCBIUS National Library of Medicinesequences↗
LOTUSNatural Products (Wikidata)compounds↗
NPASSNat. Product Activity & Species Sourcecompounds↗
Open Tree of LifeOpenTreephylogeny backbone↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗