Geometric Rainbow Dorid
Goniobranchus geometricus
- Usual depth5–20 m
- Water temperature20–30 °C
- Best monthsMarch, April, and August
- How commonOccasional
Photo credit: (c) Dan Schofield, some rights reserved (CC BY), uploaded by Dan Schofield · CC BY · iNaturalist
About this species
Goniobranchus geometricus is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.
Text from the Wikipedia article “Goniobranchus geometricus”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 226 records
- February: 191 records
- March: 236 records
- April: 272 records
- May: 208 records
- June: 140 records
- July: 161 records
- August: 235 records
- September: 209 records
- October: 213 records
- November: 207 records
- December: 231 records
Depth and water temperature
Depth
Mostly recorded at 5–20 m · Deepest record: 46 m
Water temperature
Recorded in surface water of 20–30 °C
Photos
(c) Tine Kinn Kvamme, some rights reserved (CC BY), uploaded by Tine Kinn Kvamme · CC BY · iNaturalist 
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Pierre Pericard, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Geometric Rainbow Dorid, Geometric Goniobranchus
Names in 3 more languages
- French
- Doris géométrique
- Japanese
- キカモヨウウミウシ
- Simplified Chinese
- 幾何多彩海蛞蝓, 幾何角鰓海蛞蝓
Other scientific names: Chromodoris geometrica
Similar species
Coi's GoniobranchusGoniobranchus coi
Fiesta Rainbow DoridGoniobranchus fidelis
Bus Stop NudibranchGoniobranchus hintuanensis
Pink-eared Rainbow DoridGoniobranchus verrieri
- Collingwood's Goniobranchus
Goniobranchus collingwoodi
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 754 open-data records from 1972 to 2026.
- Species data updated October 26, 2026.
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