Flat coral

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 10 records
February: 0 records
March: 2 records
April: 8 records
May: 13 records
June: 3 records
July: 9 records
August: 16 records
September: 14 records
October: 8 records
November: 12 records
December: 13 records

Depth and water temperature

Depth

Mostly recorded at 7–16 m · Deepest record: 26 m

0–10 m: 5 records
10–20 m: 8 records
20–30 m: 1 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: 0 records
22–24 °C: 0 records
24–26 °C: 6 records
26–28 °C: 7 records
28–30 °C: 33 records

Photos

(c) Thomas Irvine, 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) portioid, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Robin White, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Flat coral

Names in 1 more languages

Japanese: アミメマンジュウイシ

Other scientific names: Psammocora explanulata

Similar species

mushroom coral
Cycloseris cyclolites
mushroom coral
Cycloseris fragilis
Cycloseris mokai
mushroom coral
Cycloseris vaughani
Wells coral
Cycloseris wellsi
mushroom coral
Cycloseris costulata

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).
101 open-data records from 1922 to 2009.
Species data updated November 1, 2026.