EN

Acropora selago

Declining

Overview

Acropora selago is a stony coral belonging to the family Acroporidae, a group of reef-building corals known for their branching or plate-like skeletal structures made of calcium carbonate. Like other Acropora species, it hosts symbiotic algae (zooxanthellae) within its tissues, which provide energy through photosynthesis while the coral colony provides shelter and access to sunlight. Colonies contribute to the physical framework of reef ecosystems, creating structural habitat for fish, invertebrates, and other marine organisms.

This species occupies shallow marine neritic waters and has been recorded in Australia, Taiwan, China, Japan, and Oman, reflecting a range across the western Pacific and into the Indian Ocean.

Acropora selago faces a combination of pressures common to reef-building corals in these regions. Fishing and harvesting activities, along with recreational use of reef areas, cause direct physical damage to colonies. Pollution from domestic and urban wastewater, agricultural runoff, and effluents from non-timber crop production degrades water quality, reducing coral resilience.

Invasive species and disease outbreaks, along with pressure from problematic native species such as coral-eating starfish, add further stress. Habitat shifting linked to broader environmental change compounds these threats.

Conservation efforts affecting this species are largely embedded within broader coral reef protection frameworks, including marine protected areas, water quality regulation, and reef monitoring programs in range countries such as Australia and Japan. Species-specific interventions remain limited.

Acropora selago is currently classified as Endangered, with a decreasing population trend. Given the ongoing and multiple co-occurring threats affecting its habitat, the species' outlook remains concerning without sustained improvements in water quality management and reef protection.

This coral faces pressure from fishing activities, recreational use, and pollution from sewage and farm runoff washing into its waters. It's also threatened by disease, invasive species, and changing ocean conditions that alter its habitat. These threats are all ongoing and show no signs of letting up.

Threat summary

Habitat

Marine neritic· major

Conservation measures underway

Habitat & natural process restorationSpecies recoveryLegislation

Frequently asked questions

Why is Acropora selago classified as Endangered?
Acropora selago is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. This coral faces pressure from fishing activities, recreational use, and pollution from sewage and farm runoff washing into its waters. It's also threatened by disease, invasive species, and changing ocean conditions that alter its habitat. These threats are all ongoing and show no signs of letting up.
Where does Acropora selago live?
Acropora selago occurs in Australia, China, Japan, Oman, and Taiwan. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Acropora selago?
The main threats to Acropora selago are 11.1, 2.1, 5.4, and 6.1. The full IUCN-classified threat record for this species is detailed on the species page.

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