Where Sicklefin lemon shark has been recorded
GBIF occurrence records for Negaprion acutidens, mapped and tabulated by country.
48,016 georeferenced occurrence records with coordinates are published for Negaprion acutidens through GBIF, from 37 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
- 48,016
- Countries / areas
- 37
- Mapped locations
- 107
- Records sampled for the map
- 3,000
- Inland records omitted
- 26
- Gbif taxonkey
- 2417905
Countries and areas with the most records (GBIF)
Australia — 47,606 records; French Polynesia — 132 records; Seychelles — 110 records; Fiji — 40 records; Maldives — 24 records; Oman — 19 records; Indonesia — 11 records; Chinese Taipei — 11 records; New Caledonia — 9 records; Japan — 4 records; Mozambique — 4 records; Saudi Arabia — 4 records; British Indian Ocean Territory — 3 records; Papua New Guinea — 3 records; Pakistan — 3 records.
Source: GBIF Occurrence Search (taxonKey 2417905) — https://www.gbif.org/occurrence/search?taxon_key=2417905&has_coordinate=true (records CC0 / CC BY). Accessed 2026-09-23.
Marine regions with a WoRMS distribution record
Mozambican Exclusive Economic Zone; Kenyan Exclusive Economic Zone; Tanzanian Exclusive Economic Zone; Madagascar; Somali Exclusive Economic Zone; Mauritian Exclusive Economic Zone; Réunion Exclusive Economic Zone; Seychellois Exclusive Economic Zone; Red Sea; South Africa (country); Chagos; Eritrean Exclusive Economic Zone; Djiboutian Exclusive Economic Zone; Comoran Exclusive Economic Zone; Western Indian Ocean.
Source: WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=217356 (CC BY 4.0). Accessed 2026-09-23.
How to read this map
The map plots a sample of 3,000 of the 48,016 records, deduplicated to a half-degree grid, so dense areas do not merge into one blob. The sample covers 21 of the 37 countries or areas with records; the areas absent from the sample hold 35 records in total (Indonesia, Pakistan, Réunion, Mayotte, United Arab Emirates, Egypt, French Southern Territories, Ecuador).
26 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 2417905) — https://www.gbif.org/occurrence/search?taxon_key=2417905&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=217356 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-23.
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