Giant Monkdragon

About this species

Melibe viridis is a species of sea slug, a nudibranch, a marine gastropod mollusk in the family Tethydidae.

Text from the Wikipedia article “Melibe viridis”, 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: 28 records
February: 26 records
March: 41 records
April: 53 records
May: 50 records
June: 22 records
July: 39 records
August: 76 records
September: 61 records
October: 49 records
November: 28 records
December: 28 records

Depth and water temperature

Depth

Mostly recorded at 1–20 m · Deepest record: 61 m

0–10 m: 33 records
10–20 m: 27 records
20–30 m: 7 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 1 records

Water temperature

Recorded in surface water of 18–29 °C

18–20 °C: 18 records
20–22 °C: 19 records
22–24 °C: 13 records
24–26 °C: 9 records
26–28 °C: 8 records
28–30 °C: 72 records

Photos

(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Sarah Faulwetter, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Ben Costamagna, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist

Names and classification

English: Giant Monkdragon, Green Melibe, Wonderous Melibe Slug

Names in 2 more languages

German: Grüne Melibe
Japanese: ムカデメリベ

Other scientific names: Melibe fimbriata, Melibe rangi, Melibe vexillifera, Meliboea viridis, Propemelibe mirifica

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).
214 open-data records from 1955 to 2026.
Species data updated October 30, 2026.