Reversed glass sponge

Farrea occa

Other invertebrates
IUCN: Not evaluated

Usual depth635–1,899 m
Water temperature-2–29 °C
Best monthsMay
How commonCommon

All species

About this species

Farrea occa is a species of glass sponge in the family Farreidae.

Text from the Wikipedia article “Farrea occa”, 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: 18 records
February: 13 records
March: 1,467 records
April: 330 records
May: 4,963 records
June: 76 records
July: 597 records
August: 808 records
September: 1,560 records
October: 814 records
November: 281 records
December: 0 records

Depth and water temperature

Depth

Mostly recorded at 635–1,899 m · Deepest record: 3,440 m

20–30 m: 2 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 1 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110–120 m: 1 records
120–130 m: 2 records
130+ m: 10,895 records

Water temperature

Recorded in surface water of -2–29 °C

-2–0 °C: 1 records
0–2 °C: 0 records
2–4 °C: 0 records
4–6 °C: 26 records
6–8 °C: 0 records
8–10 °C: 36 records
10–12 °C: 38 records
12–14 °C: 185 records
14–16 °C: 351 records
16–18 °C: 29 records
18–20 °C: 2 records
20–22 °C: 1 records
22–24 °C: 0 records
24–26 °C: 48 records
26–28 °C: 2 records
28–30 °C: 27 records

Names and classification

English: Reversed glass sponge, reversed glass sponge

Names in 2 more languages

French: éponge renversée
Japanese: キヌアミカイメン

Other scientific names: Farrea haeckelii

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).
10,972 open-data records from 1862 to 2023.
Species data updated November 2, 2026.

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