
DiscoverSpeciesCorals and anemones
hammer-tooth coral
Fimbriaphyllia ancora
- Usual depth2–13 m
- Water temperature25–29 °C
- Best monthsJanuary, February, and April
- How commonOccasional
Photo credit: (c) Susan Prior, some rights reserved (CC BY), uploaded by Susan Prior · CC BY · iNaturalist
About this species
Fimbriaphyllia ancora is a species of hard coral in the family Euphylliidae. It is known by several common names, including anchor coral and hammer coral, or less frequently as sausage coral, ridge coral, or bubble honeycomb coral.
Text from the Wikipedia article “Fimbriaphyllia ancora”, 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: 84 records
- February: 90 records
- March: 74 records
- April: 86 records
- May: 72 records
- June: 57 records
- July: 46 records
- August: 64 records
- September: 61 records
- October: 66 records
- November: 74 records
- December: 63 records
Depth and water temperature
Depth
Mostly recorded at 2–13 m · Deepest record: 36.5 m
Water temperature
Recorded in surface water of 25–29 °C
Photos

(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) Susan Prior, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Susan Prior, some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
Names and classification
- English
- hammer-tooth coral
Names in 2 more languages
- German
- Hammerkoralle
- Japanese
- ホソナガレハナサンゴ
Other scientific names: Euphyllia (Fimbriaphyllia) ancora, Euphyllia anacora, Euphyllia ancora, Fimbriaphyllia (Euphyllia) ancora
Similar species
Frogspawn CoralFimbriaphyllia divisa
Crystal coralGalaxea fascicularis
Tombstone coralCoeloseris mayeri
Joker coralEuphyllia glabrescens
Octopus coralGalaxea astreata

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).
- 271 open-data records from 1979 to 2010.
- Species data updated November 2, 2026.
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