Atagema spongiosa

Nudibranchs
IUCN: Not evaluated

Usual depth1–18 m
Water temperature19–29 °C
Best monthsJuly, August, and October
How commonRare

Photo credit: (c) Susan Prior, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Atagema spongiosa is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Discodorididae.

Text from the Wikipedia article “Atagema spongiosa”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 16 records
February: 20 records
March: 19 records
April: 15 records
May: 11 records
June: 17 records
July: 21 records
August: 26 records
September: 15 records
October: 21 records
November: 13 records
December: 16 records

Depth and water temperature

Depth

Mostly recorded at 1–18 m · Deepest record: 20 m

0–10 m: 20 records
10–20 m: 13 records
20–30 m: 2 records

Water temperature

Recorded in surface water of 19–29 °C

18–20 °C: 8 records
20–22 °C: 17 records
22–24 °C: 9 records
24–26 °C: 8 records
26–28 °C: 4 records
28–30 °C: 14 records

Photos

Names and classification

Names in 2 more languages

Japanese: ジャノメカイメンウミウシ, スポンジウミウシ
Simplified Chinese: 海綿盤海牛

Other scientific names: Atagema paagoumenei, Dendrodoris areolata, Doris areolata, Doris spongiosa, Phlegmodoris mephitica, Phlegmodoris paagoumenei, Trippa (Phlegmodoris) paagoumenei

Similar species

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).
73 open-data records from 1965 to 2026.
Species data updated October 26, 2026.

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