Iridescent nudibranch

Notobryon wardi

Nudibranchs
IUCN: Not evaluated

Usual depth5–26 m
Water temperature17–29 °C
Best monthsMarch, April, and May
How commonRare

About this species

Notobryon wardi, the iridescent nudibranch, is a species of scyllid nudibranch, and is found in South Africa. It is a marine gastropod mollusc in the family Scyllaeidae.

Text from the Wikipedia article “Notobryon wardi”, 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: 4 records
February: 11 records
March: 13 records
April: 13 records
May: 16 records
June: 10 records
July: 12 records
August: 8 records
September: 4 records
October: 4 records
November: 12 records
December: 7 records

Depth and water temperature

Depth

Mostly recorded at 5–26 m · Deepest record: 109.7 m

0–10 m: 20 records
10–20 m: 25 records
20–30 m: 6 records
30–40 m: 2 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 1 records

Water temperature

Recorded in surface water of 17–29 °C

16–18 °C: 1 records
18–20 °C: 10 records
20–22 °C: 3 records
22–24 °C: 6 records
24–26 °C: 11 records
26–28 °C: 13 records
28–30 °C: 47 records

Names and classification

English: Iridescent nudibranch, Sandy Grassdragon, iridescent nudibranch

Names in 3 more languages

Japanese: ユメウミウシ
Korean: 사슴갯민숭이
Simplified Chinese: 瓦氏背苔海蛞蝓

Similar species

Frilled Grassdragon
Scyllaea fulva

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).
117 open-data records from 1981 to 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