knob coral

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 9 records
February: 8 records
March: 2 records
April: 14 records
May: 32 records
June: 9 records
July: 8 records
August: 29 records
September: 16 records
October: 6 records
November: 5 records
December: 5 records

Depth and water temperature

Depth

Mostly recorded at 2–15 m · Deepest record: 54 m

0–10 m: 71 records
10–20 m: 14 records
20–30 m: 2 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 2 records

Water temperature

Recorded in surface water of 22–29 °C

22–24 °C: 8 records
24–26 °C: 47 records
26–28 °C: 54 records
28–30 °C: 42 records

Photos

(c) Debra Baker, some rights reserved (CC BY), uploaded by Debra Baker · CC BY · iNaturalist
(c) Debra Baker, some rights reserved (CC BY), uploaded by Debra Baker · CC BY · iNaturalist
(c) Ryan McMinds, some rights reserved (CC BY) · CC BY · iNaturalist
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Ryan McMinds, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: knob coral

Names in 2 more languages

Japanese: アツキクメイシ
Simplified Chinese: 圓形角菊珊瑚

Other scientific names: Dipsastraea rotundata, Favia rotundata

Similar species

Larger star coral
Favites abdita
Larger star coral
Favites flexuosa
false knob coral
Favites magnistellata
Larger star coral
Favites pentagona
Larger star coral
Favites chinensis
Larger star coral
Favites complanata

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.
Conservation status as published by GBIF (IUCN Red List).
248 open-data records from 1976 to 2010.
Species data updated November 2, 2026.