Thecacera picta

Nudibranchs
IUCN: Not evaluated

Usual depth11–29 m
Water temperature20–30 °C
Best monthsMarch and April
How commonOccasional

Photo credit: (c) Ben Costamagna, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Thecacera picta is a species of sea slug, a nudibranch, a shell-less marine gastropod mollusc in the family Polyceridae.

Text from the Wikipedia article “Thecacera picta”, 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: 61 records
February: 76 records
March: 127 records
April: 159 records
May: 90 records
June: 41 records
July: 30 records
August: 41 records
September: 33 records
October: 33 records
November: 31 records
December: 46 records

Depth and water temperature

Depth

Mostly recorded at 11–29 m · Deepest record: 56 m

0–10 m: 4 records
10–20 m: 58 records
20–30 m: 50 records
30–40 m: 8 records
40–50 m: 1 records
50–60 m: 2 records

Water temperature

Recorded in surface water of 20–30 °C

18–20 °C: 1 records
20–22 °C: 45 records
22–24 °C: 7 records
24–26 °C: 35 records
26–28 °C: 17 records
28–30 °C: 135 records

Photos

(c) Ben Costamagna, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
no rights reserved · CC0 1.0 · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
no rights reserved · CC0 1.0 · iNaturalist
(c) 呂一起(Lyu yi-chi), some rights reserved (CC BY) · CC BY · iNaturalist
(c) Gregor Bailar, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

Names in 3 more languages

French: Thécacère peinte
Japanese: ツノザヤウミウシ
Simplified Chinese: 彩繪多角海蛞蝓

Similar species

Chamberlain's Nembrotha
Nembrotha chamberlaini
Crested Nembrotha
Nembrotha cristata
Trance Wrinkle Dorid
Nembrotha kubaryana
Ivory Wrinkle Dorid
Nembrotha lineolata
Shadowy Wrinkle Dorid
Nembrotha milleri
Graceful Wrinkle Dorid
Roboastra gracilis

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).
315 open-data records from 1992 to 2026.
Species data updated October 26, 2026.

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