Where Thong weed has been recorded
GBIF occurrence records for Himanthalia elongata, mapped and tabulated by country.
Distribution map plotted from GBIF.org occurrence records; basemap Natural Earth 110m · GBIF records CC0 / CC BY; Natural Earth public domain
12,594 georeferenced occurrence records with coordinates are published for Himanthalia elongata through GBIF, from 19 countries or marine areas. This page maps those records and lists where they come from. Occurrence records reflect where people have looked as well as where the species lives, so well-surveyed coastlines are over-represented.
- Georeferenced records
- 12,594
- Countries / areas
- 19
- Mapped locations
- 141
- Records sampled for the map
- 3,000
- Inland records omitted
- 127
- Gbif taxonkey
- 3197836
Countries and areas with the most records (GBIF)
United Kingdom of Great Britain and Northern Ireland — 4,346 records; France — 2,841 records; Netherlands — 1,604 records; Ireland — 1,208 records; Belgium — 805 records; Spain — 501 records; Portugal — 435 records; Norway — 302 records; Faroe Islands — 169 records; Isle of Man — 127 records; Guernsey — 92 records; Denmark — 57 records; Jersey — 37 records; Germany — 29 records; Morocco — 20 records.
Source: GBIF Occurrence Search (taxonKey 3197836) — https://www.gbif.org/occurrence/search?taxon_key=3197836&has_coordinate=true (records CC0 / CC BY). Accessed 2026-09-23.
Marine regions with a WoRMS distribution record
European waters (ERMS scope); Belgian Exclusive Economic Zone; Zeebrugge; De Panne; Bredene; Dutch Exclusive Economic Zone; Wimereux; Oostduinkerke; De Haan; Belgian Coast; Irish Exclusive economic Zone; Swedish Exclusive Economic Zone; Northern Norway and Finnmark; Southern Norway; Temperate Northern Atlantic; Celtic Seas; North Sea; South European Atlantic Shelf; Faroe Plateau; German part of the North Sea.
Source: WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=145551 (CC BY 4.0). Accessed 2026-09-23.
How to read this map
The map plots a sample of 3,000 of the 12,594 records, deduplicated to a half-degree grid, so dense areas do not merge into one blob. The sample covers 17 of the 19 countries or areas with records; the areas absent from the sample hold 2 records in total (Chile, New Zealand).
127 records plotting inland were omitted: for a marine species those are almost always the holding institution's coordinates rather than a collection site.
Records show where the species has been observed and reported, not a modelled range.
Source: GBIF Occurrence Search (taxonKey 3197836) — https://www.gbif.org/occurrence/search?taxon_key=3197836&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=145551 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-23.
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