Beaded Pump Dorid

Diaphorodoris mitsuii

Nudibranchs
IUCN: Not evaluated

Usual depth5–20 m
Water temperature13–29 °C
Best monthsMarch, May, and June
How commonRare

About this species

Diaphorodoris mitsuii is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Calycidorididae.

Text from the Wikipedia article “Diaphorodoris mitsuii”, 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: 17 records
February: 17 records
March: 24 records
April: 17 records
May: 27 records
June: 19 records
July: 14 records
August: 11 records
September: 2 records
October: 8 records
November: 8 records
December: 4 records

Depth and water temperature

Depth

Mostly recorded at 5–20 m · Deepest record: 24 m

0–10 m: 33 records
10–20 m: 79 records
20–30 m: 14 records

Water temperature

Recorded in surface water of 13–29 °C

12–14 °C: 4 records
14–16 °C: 1 records
16–18 °C: 2 records
18–20 °C: 19 records
20–22 °C: 98 records
22–24 °C: 12 records
24–26 °C: 3 records
26–28 °C: 2 records
28–30 °C: 8 records

Names and classification

English: Beaded Pump Dorid

Names in 3 more languages

Japanese: ミツイラメリウミウシ
Korean: 테고무신갯민숭달팽이
Simplified Chinese: 三井瓣海蛞蝓, 三氏瓣海蛞蝓

Other scientific names: Lamellidoris mitsuii

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).
160 open-data records from 1989 to 2026.
Species data updated November 2, 2026.

Log what you see on your next dive

The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.

Join the waitlist