Where does the Oithona nana live?
Oithona nana has 28,612 records in 52 countries and territories, from 1902 to 2025. Most records come from Romania.
- 28,612 records
- 52 places
- 87 years recorded
- Copepoda class
AnimaliaArthropodaCopepodaCyclopoidaOithonidaeOithona
When it is recorded
JFMAMJJASOND
Peak month: August. 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
19022025
Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.
Where it is recorded
| Place | Records | Share |
|---|---|---|
| Romania | 7,854 | |
| Ukraine | 6,112 | |
| Italy | 3,618 | |
| Germany | 2,696 | |
| Japan | 1,872 | |
| Australia | 1,232 | |
| France | 653 | |
| United Kingdom | 499 | |
| Türkiye | 449 | |
| New Zealand | 356 | |
| Spain | 303 | |
| Bulgaria | 260 | |
| Venezuela | 230 | |
| Colombia | 217 | |
| Argentina | 166 | |
| Brazil | 164 | |
| Belgium | 130 | |
| Chile | 123 | |
| Netherlands | 96 | |
| Greece | 95 | |
| Georgia | 94 | |
| Tunisia | 89 | |
| Russia | 68 | |
| Croatia | 47 | |
| Svalbard and Jan Mayen | 43 | |
| Guernsey | 41 | |
| Lebanon | 33 | |
| Sweden | 33 | |
| Nigeria | 29 | |
| Denmark | 26 | |
| Algeria | 14 | |
| Norway | 12 | |
| Canada | 11 | |
| Egypt | 10 | |
| Madagascar | 10 | |
| Namibia | 9 | |
| ZZ | 5 | |
| United States | 4 | |
| Portugal | 3 | |
| Ireland | 2 |
Showing the top 40 of 52 places.
Related animals
Others in the family Oithonidae.
Status from the records: resident
Recorded across many years and months — an established presence. 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.
Recorded across many years and months — an established presence. 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.