Batangas Halgerda

About this species

Halgerda batangas is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Discodorididae.

Text from the Wikipedia article “Halgerda batangas”, 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: 74 records
February: 91 records
March: 102 records
April: 141 records
May: 110 records
June: 95 records
July: 94 records
August: 115 records
September: 127 records
October: 87 records
November: 97 records
December: 102 records

Depth and water temperature

Depth

Mostly recorded at 7–20 m · Deepest record: 100 m

0–10 m: 8 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: 0 records
70–80 m: 0 records
80–90 m: 1 records
90–100 m: 0 records
100–110 m: 1 records

Water temperature

Recorded in surface water of 24–30 °C

24–26 °C: 2 records
26–28 °C: 21 records
28–30 °C: 226 records

Photos

(c) Bernard Picton, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Bernard DUPONT, some rights reserved (CC BY) · CC BY · iNaturalist
(c) rashidchan, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Batangas Halgerda

Similar species

Willey’s Nudibranch
Halgerda willeyi
Bohol Discodoris
Discodoris boholiensis
Ringed Velvet Dorid
Jorunna funebris
Spotted Foot Nudibranch
Tayuva lilacina
Starback Tentacled Dorid
Asteronotus cespitosus
Asteronotus hepaticus

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).
451 open-data records from 1987 to 2026.
Species data updated October 26, 2026.