Where Winding nori has been recorded
GBIF occurrence records for Ulva flexuosa, mapped and tabulated by country.
2,921 georeferenced occurrence records with coordinates are published for Ulva flexuosa through GBIF, from 97 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
- 2,921
- Countries / areas
- 97
- Mapped locations
- 314
- Records sampled for the map
- 2,921
- Inland records omitted
- 405
- Gbif taxonkey
- 5273507
Countries and areas with the most records (GBIF)
United States of America — 762 records; Mexico — 293 records; Brazil — 292 records; United Kingdom of Great Britain and Northern Ireland — 214 records; Sweden — 195 records; Venezuela (Bolivarian Republic of) — 131 records; Australia — 88 records; Puerto Rico — 80 records; Denmark — 65 records; Canada — 59 records; Netherlands — 56 records; Spain — 51 records; Bermuda — 50 records; Kenya — 32 records; Barbados — 27 records.
Source: GBIF Occurrence Search (taxonKey 5273507) — https://www.gbif.org/occurrence/search?taxon_key=5273507&has_coordinate=true (records CC0 / CC BY). Accessed 2026-09-23.
Marine regions with a WoRMS distribution record
Belgian Exclusive Economic Zone; Gulf of Mexico; Irish Exclusive economic Zone; Polish Exclusive Economic Zone; Czech Republic; Azores Canaries Madeira.
Source: WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=234468 (CC BY 4.0). Accessed 2026-09-23.
How to read this map
The map plots a sample of 2,921 of the 2,921 records, deduplicated to a half-degree grid, so dense areas do not merge into one blob. The sample covers 97 of the 97 countries or areas with records; the areas absent from the sample hold 0 records in total.
405 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 5273507) — https://www.gbif.org/occurrence/search?taxon_key=5273507&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=234468 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-23.
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