Evidence found
79 records across 13 countries and territories, 1883–2009.
Heterocentrotus trigonarius · GBIF taxon key 4341565
Where has the Heterocentrotus trigonarius been recorded?
Heterocentrotus trigonarius occurrence evidence comes from 79 records in 13 countries and territories, from 1883 to 2009. Most records come from Tonga.
- 79 records
- 13 places
- 21 years recorded
- Echinoidea class
Observation evidence passport
Source coverage
CC0 GBIF Animalia occurrence facets, including country, month and year summaries.
Refreshed 2026-09-23. Inspect the taxon on GBIF.
What this means
The species has been recorded in the listed places in the stated source universe. Peak month: October.
7 months reach at least 10% of the peak facet count.
What this does not mean
repeated describes the record pattern, not a formal range, residency, abundance or conservation assessment.
A single record remains evidence of a recording, not proof that a population lives there.
Compare this animal’s observation pattern
When it is recorded
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Peak month: October. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.
Records over time
18832009
Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.
Where Heterocentrotus trigonarius has been recorded
The countries below show where occurrence evidence exists for Heterocentrotus trigonarius. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.
| Place | Records | Share |
|---|---|---|
| Tonga | 24 | |
| Marshall Islands | 19 | |
| French Polynesia | 14 | |
| United States Minor Outlying Islands | 6 | |
| American Samoa | 4 | |
| Kiribati | 3 | |
| PN | 2 | |
| Tanzania | 2 | |
| Cook Islands | 1 | |
| Comoros | 1 | |
| NR | 1 | |
| Philippines | 1 | |
| Samoa | 1 |
Related animals
Others in the family Echinometridae.
Record pattern: repeated
Repeated records across many years and months. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.
Repeated records across many years and months. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.