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DiscoverSpeciesCorals and anemones

Staghorn coral

Acropora millepora

  • Corals and anemones
  • IUCN: Endangered
  • Usual depth1–8 m
  • Water temperature22–30 °C
  • Best monthsMay, August, and November
  • How commonOccasional
All species

Photo credit: no rights reserved · CC0 1.0 · iNaturalist

About this species

Acropora millepora is a species of branching stony coral native to the western Indo-Pacific where it is found in shallow water from the east coast of Africa to the coasts of Japan and Australia. It was first described in 1834 by Christian Gottfried Ehrenberg as Heteropora millepora.

Text from the Wikipedia article “Acropora millepora”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 33 records
  • February: 68 records
  • March: 58 records
  • April: 74 records
  • May: 186 records
  • June: 59 records
  • July: 62 records
  • August: 151 records
  • September: 60 records
  • October: 97 records
  • November: 127 records
  • December: 95 records

Depth and water temperature

Depth

Mostly recorded at 1–8 m · Deepest record: 287 m

  • 0–10 m: 369 records
  • 10–20 m: 26 records
  • 20–30 m: 1 records
  • 30–40 m: 0 records
  • 40–50 m: 0 records
  • 50–60 m: 0 records
  • 60–70 m: 0 records
  • 70–80 m: 0 records
  • 80–90 m: 0 records
  • 90–100 m: 0 records
  • 100–110 m: 0 records
  • 110+ m: 2 records

Water temperature

Recorded in surface water of 22–30 °C

  • 22–24 °C: 26 records
  • 24–26 °C: 184 records
  • 26–28 °C: 181 records
  • 28–30 °C: 161 records

Names and classification

English
Staghorn coral
Names in 2 more languages
Japanese
ハイマツミドリイシ
Simplified Chinese
多孔軸孔珊瑚

Other scientific names: Acropora (Acropora) millepora, Acropora (Lepidocyathus) convexa, Acropora (Lepidocyathus) millepora, Acropora (Lepidocyathus) prostrata, Acropora (Lepidocyathus) squamosa, Acropora convexa, Acropora librata, Acropora prostrata, Acropora singularis, Acropora squamosa, Heteropora millepora, Madrepora (Lepidocyathus) convexa, Madrepora (Lepidocyathus) millepora, Madrepora (Lepidocyathus) prostrata, Madrepora (Lepidocyathus) rubra, Madrepora (Lepidocyathus) squamosa, Madrepora convexa, Madrepora millepora, Madrepora prostrata, Madrepora rubra, Madrepora squamosa, Montipora rubra, Montipora rubrum

Similar species

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).
  • 1,905 open-data records from 1834 to 2024.
  • Species data updated October 26, 2026.

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