knob coral

Dipsastraea matthaii

Corals and anemones
IUCN: Least concern

Usual depth8–45 m
Water temperature22–29 °C
Best monthsApril
How commonOccasional

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 3 records
February: 119 records
March: 191 records
April: 1,071 records
May: 284 records
June: 8 records
July: 8 records
August: 48 records
September: 13 records
October: 24 records
November: 2 records
December: 1 records

Depth and water temperature

Depth

Mostly recorded at 8–45 m · Deepest record: 57 m

0–10 m: 196 records
10–20 m: 61 records
20–30 m: 97 records
30–40 m: 796 records
40–50 m: 639 records
50–60 m: 12 records

Water temperature

Recorded in surface water of 22–29 °C

22–24 °C: 6 records
24–26 °C: 57 records
26–28 °C: 91 records
28–30 °C: 690 records

Names and classification

English: knob coral

Names in 2 more languages

Japanese: アラキクメイシ
Simplified Chinese: 馬賽菊珊瑚

Other scientific names: Favia matthai, Favia matthaii, Favia rugosa

Similar species

knob coral
Dipsastraea speciosa
Head Coral
Dipsastraea favus
knob coral
Dipsastraea lizardensis
knob coral
Dipsastraea pallida
knob coral
Dipsastraea lacuna
knob coral
Dipsastraea laxa

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).
1,982 open-data records from 1918 to 2012.
Species data updated November 2, 2026.

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