White-diamond Egg-eater

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 29 records
February: 53 records
March: 41 records
April: 56 records
May: 55 records
June: 39 records
July: 48 records
August: 60 records
September: 42 records
October: 40 records
November: 54 records
December: 39 records

Depth and water temperature

Depth

Mostly recorded at 2–18 m · Deepest record: 35.1 m

0–10 m: 78 records
10–20 m: 46 records
20–30 m: 9 records
30–40 m: 2 records

Water temperature

Recorded in surface water of 18–30 °C

16–18 °C: 1 records
18–20 °C: 18 records
20–22 °C: 35 records
22–24 °C: 8 records
24–26 °C: 52 records
26–28 °C: 24 records
28–30 °C: 53 records

Photos

(c) Bernard Picton, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · 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
(c) 呂一起(Lyu yi-chi), some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: White-diamond Egg-eater, Egg-eating Nudibranch

Names in 3 more languages

French: Favorinus japonisant
Japanese: チゴミノウミウシ
Simplified Chinese: 日本灰翼海蛞蝓

Similar species

Black-horned Egg-eater
Favorinus tsuruganus
Miraculous Egg-eater
Favorinus mirabilis
Sunrise Tentacle Aeolid
Caloria indica
Lined cratena
Cratena lineata
Australian Blue Dragon
Pteraeolidia ianthina
Ornate facelinid
Austraeolis ornata

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.
Conservation status as published by GBIF (IUCN Red List).
230 open-data records from 1976 to 2026.
Species data updated October 26, 2026.