knob coral

Dipsastraea laxa

Corals and anemones
IUCN: Endangered

Usual depth2–17 m
Water temperature-0–30 °C
Best monthsMay, August, and September
How commonRare

All species

Photo credit: no rights reserved · CC0 1.0 · iNaturalist

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 4 records
February: 1 records
March: 3 records
April: 3 records
May: 9 records
June: 1 records
July: 6 records
August: 10 records
September: 9 records
October: 1 records
November: 4 records
December: 0 records

Depth and water temperature

Depth

Mostly recorded at 2–17 m · Deepest record: 60 m

0–10 m: 26 records
10–20 m: 6 records
20–30 m: 1 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 2 records

Water temperature

Recorded in surface water of -0–30 °C

-2–0 °C: 1 records
0–2 °C: 0 records
2–4 °C: 0 records
4–6 °C: 0 records
6–8 °C: 0 records
8–10 °C: 0 records
10–12 °C: 0 records
12–14 °C: 0 records
14–16 °C: 0 records
16–18 °C: 0 records
18–20 °C: 0 records
20–22 °C: 1 records
22–24 °C: 1 records
24–26 °C: 60 records
26–28 °C: 40 records
28–30 °C: 32 records

Photos

no rights reserved · CC0 1.0 · iNaturalist

Names and classification

English: knob coral

Names in 2 more languages

Japanese: ヤスリキクメイシ
Simplified Chinese: 疏菊珊瑚

Other scientific names: Favia laxa, Goniastrea laxa, Orbicella laxa, Plesiastrea laxa

Similar species

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

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).
137 open-data records from 1875 to 2010.
Species data updated November 2, 2026.

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