Coi's Goniobranchus

Goniobranchus coi

Nudibranchs
IUCN: Not evaluated

Usual depth4–17 m
Water temperature19–30 °C
Best monthsMarch, April, and May
How commonOccasional

Photo credit: (c) Steve Childs, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Goniobranchus coi is a species of very colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.

Text from the Wikipedia article “Goniobranchus coi”, 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: 78 records
February: 94 records
March: 121 records
April: 120 records
May: 117 records
June: 93 records
July: 78 records
August: 99 records
September: 75 records
October: 82 records
November: 105 records
December: 114 records

Depth and water temperature

Depth

Mostly recorded at 4–17 m · Deepest record: 32 m

0–10 m: 35 records
10–20 m: 41 records
20–30 m: 3 records
30–40 m: 1 records

Water temperature

Recorded in surface water of 19–30 °C

18–20 °C: 9 records
20–22 °C: 2 records
22–24 °C: 4 records
24–26 °C: 46 records
26–28 °C: 28 records
28–30 °C: 222 records

Photos

(c) Steve Childs, some rights reserved (CC BY) · CC BY · iNaturalist
(c) klukoff, some rights reserved (CC BY) · CC BY · iNaturalist
no rights reserved · CC0 1.0 · iNaturalist
(c) Ben Costamagna, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Pauline Walsh Jacobson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) harry beaman, some rights reserved (CC BY) · CC BY · iNaturalist
no rights reserved · CC0 1.0 · iNaturalist

Names and classification

English: Coi's Goniobranchus

Names in 2 more languages

French: Doris de Co
Japanese: シラナミイロウミウシ

Other scientific names: Chromodoris coi, Glossodoris coi

Similar species

Fiesta Rainbow Dorid
Goniobranchus fidelis
Geometric Rainbow Dorid
Goniobranchus geometricus
Bus Stop Nudibranch
Goniobranchus hintuanensis
Goniobranchus kuniei
Pink-eared Rainbow Dorid
Goniobranchus 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).
461 open-data records from 1974 to 2026.
Species data updated October 26, 2026.

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