Bluff oyster

Ostrea chilensis

Molluscs
IUCN: Not evaluated

Usual depth9–91 m
Water temperature9–29 °C
Best monthsApril, May, and October
How commonOccasional

Photo credit: (c) Auckland War Memorial Museum, some rights reserved (CC BY), uploaded by Auckland War Memorial Museum · CC BY · iNaturalist

About this species

The dredge oyster, Bluff oyster or Chilean oyster, is also known in Chile as ostra verde, is a species of flat oyster. It is a marine bivalve mollusc of the family Ostreidae.

Text from the Wikipedia article “Dredge oyster”, 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: 63 records
February: 59 records
March: 58 records
April: 76 records
May: 109 records
June: 38 records
July: 26 records
August: 46 records
September: 37 records
October: 97 records
November: 62 records
December: 59 records

Depth and water temperature

Depth

Mostly recorded at 9–91 m · Deepest record: 1,921 m

0–10 m: 32 records
10–20 m: 45 records
20–30 m: 68 records
30–40 m: 43 records
40–50 m: 30 records
50–60 m: 19 records
60–70 m: 17 records
70–80 m: 21 records
80–90 m: 8 records
90–100 m: 6 records
100–110 m: 5 records
110+ m: 22 records

Water temperature

Recorded in surface water of 9–29 °C

8–10 °C: 1 records
10–12 °C: 56 records
12–14 °C: 111 records
14–16 °C: 148 records
16–18 °C: 16 records
18–20 °C: 0 records
20–22 °C: 0 records
22–24 °C: 1 records
24–26 °C: 0 records
26–28 °C: 0 records
28–30 °C: 2 records

Photos

(c) Auckland War Memorial Museum, some rights reserved (CC BY), uploaded by Auckland War Memorial Museum · CC BY · iNaturalist
(c) Auckland War Memorial Museum, some rights reserved (CC BY), uploaded by Auckland War Memorial Museum · CC BY · iNaturalist
(c) Auckland War Memorial Museum, some rights reserved (CC BY), uploaded by Auckland War Memorial Museum · CC BY · iNaturalist
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Jenny Saito, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Jenny Saito, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Julia Palmer, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Bluff oyster, Chilean flat oyster, Chilean Oyster, bluff oyster, Dredge oyster

Names in 3 more languages

German: Chilenische Flachauster, Chilenische Plattauster
Spanish: ostra chilena
French: huître chilienne

Other scientific names: Crassostrea chilensis, Crassostrea discoidea, Crassostrea nelsoniana, Ostraea chiloensis, Ostrea callichroa, Ostrea charlottae, Ostrea cibialis, Ostrea corrugata, Ostrea discoidea, Ostrea fococarens, Ostrea hefferdi, Ostrea huttoni, Ostrea hyotis, Ostrea longiuscula, Ostrea lutaria, Ostrea nelsoniana, Ostrea vinolenta, Tiostrea chilensis, Tiostrea lutaria

Similar species

Angasi oyster
Ostrea angasi
Common oyster
Ostrea edulis
Crested oyster
Ostrea equestris
Ostrea subucula
Japanese Oyster
Magallana gigas
Leaf oyster
Dendostrea folium

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).
536 open-data records from 1850 to 2019.
Species data updated November 5, 2026.

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