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Species Directory

Isopora crateriformis Coral

Overview Conservation & Management Resources
Isopora crateriformis is a species of coral likely distributed within the Coral Triangle area and some of the western Pacific including New Caledonia, the Samoas (including American Samoa), and the Marshall Islands. Learn more about this coral species.

Isopora crateriformis Coral

Isopora crateriformis

640x427-Isopora-craterformis-coral.jpg

Protected Status

ESA Threatened
Throughout Its Range
CITES Appendix II
Throughout Its Range
SPAW Annex III
Throughout the Wider Caribbean Region

Quick Facts

Threats
Climate change (including ocean warming and ocean acidification), Diseases, Habitat degradation, Land-based sources of pollution
Region
Pacific Islands
750x500-isopora-crateriformis-coral.jpg Isopora crateriformis. Credit: Douglas Fenner

Isopora crateriformis. Credit: Douglas Fenner

About the Species

750x500-isopora-crateriformis-coral.jpg Isopora crateriformis. Credit: Douglas Fenner

Isopora crateriformis. Credit: Douglas Fenner

Isopora crateriformis is found in the Coral Triangle (Indonesia, Malaysia, the Philippines, New Guinea, Solomon Islands) and the central Pacific Ocean. In the United States, it occurs in American Samoa. Colonies are flattened, solid, encrusting plates, usually with ripples on the surface. Most colonies are tan, but a few have tiny green spots which are the retracted polyps. Isopora crateriformis is listed as threatened under the Endangered Species Act.

NOAA Fisheries is committed to conserving and protecting Isopora crateriformis. Our scientists and partners use a variety of innovative techniques to study, learn more about, and protect this species.

Where They Live

Isopora Crateriformis can be found from the northeast Indian Ocean to the central Pacific Ocean. This coral is often found on shallow forereefs, but may also occur in backreef areas with strong wave action.

a world map representing the range population of Isopora Crateriformis coral World map providing approximate representation of the Isopora Crateriformis range

Scientific Classification

Kingdom Animalia
Phylum Cnidaria
Class Anthozoa
Order Scleractinia
Family Acroporidae
Genus Isopora
Species crateriformis

Last updated by NOAA Fisheries on 04/28/2025


Featured News

Corals in clear pristine waters. Shallow water provides habitat for branching corals (Acropora spp), as seen here on a reef flat in Guam. Credit: NOAA Fisheries/Jonathan Brown
Feature Story

Celebrate Corals Week

National
Healthy coral reef with fishes in the foreground, a diver conducts a survey in the background. A scientist carefully hovers above the reef off of Kailua-Kona to take photographs while swimming along a transect line. He took more than 1,000 photos of this single transect that will be stitched together to form a 3D model of this reef. It will be interesting to see how this reef with high coral cover has changed over time! Credit: NOAA Fisheries/Dani Escontrella
Feature Story

Hawai‘i Coral Reef Assessments Complete for 2024

Pacific Islands
A collage of photos shows schools of fish, vibrant reefs, scuba divers laying transects, and scientists sharing information with the public. A few of the highlights from the 2023 mission. Credit: NOAA Fisheries
Feature Story

Collaboration Guides Completion of 2023 Seafloor Mapping and Coral Reef Assessments

Pacific Islands
Yellow coral that has colonies of thick, finger-like branches that are always closely spaced. Acropora globiceps at Tinian island, Commonwealth of the Northern Mariana Islands. Under the Endangered Species Act, A. globiceps is listed as threatened in CNMI, American Samoa, Guam, Hawaiʻi, and the Pacific Remote Islands Area. Credit: Doug Fenner
Feature Story

Meet Your Pacific Islands Protected Coral Species

Pacific Islands
View More News

Management Overview

The Isopora crateriformis coral is listed as threatened under the Endangered Species Act.

Additionally, the Isopora crateriformis coral is listed under:

  • Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) 
  • Annex III of the Protocol for Specially Protected Areas and Wildlife (SPAW)

Recovery Planning and Implementation

Under the ESA, NOAA Fisheries is required to develop and implement recovery plans for the conservation and survival of listed species. NOAA Fisheries has developed a recovery outline to serve as an interim guidance document to direct recovery efforts, including recovery planning, for the 15 species of ESA-listed threatened Indo-Pacific corals (herein referred to as the 15 listed corals) until a full recovery plan is developed and approved. The recovery outline presents a preliminary strategy for recovery of the 15 listed corals and recommends high priority actions to stabilize and recover the species.

Recovery Planning Workshop

We held a recovery planning workshop for the 15 listed corals over the course of four 3-hour virtual sessions in May 2021. We announced the workshop in the U.S. Federal Register (86 FR 15650) on March 24, 2021, and it was open to the public. We held duplicate meetings for each session’s discussion points to accommodate participants from different time zones.

The purpose of the workshop was to connect stakeholders and experts from a range of relevant disciplines to:

  • Gather information and ideas on recovery approaches that address the challenges relevant to recovery of the 15 listed corals 
  • Develop recovery criteria that need to be met to delist each of the species 
  • Identify recovery actions to reduce and/or ameliorate threats to the 15 listed corals 

Participants represented a variety of areas of expertise from a range of relevant disciplines, including the listed coral species’ biology/ecology, threats to the species, the species’ habitat and ecosystem, recovery planning, and coral reef conservation and management.

  • Recovery Planning Workshop Summary (PDF, 64 pages) 
  • Attachment C - Presentations (PDF, 140 pages)

Recovery Status Review

We developed an up-to-date Recovery Status Review for the 15 Species of Indo-Pacific reef-building corals listed under the Endangered Species Act. A Recovery Status Review is a stand-alone document that provides the most comprehensive and current information on the 15 species' biology, ecology, status and threats, and conservation efforts. This document was developed in July 2023, and will be updated as needed with new information. The Recovery Status Review will be used for various purposes, including informing recovery planning, 5-year reviews, Section 7 consultations, and section 10 conservation plans.

Recovery Contacts

  • Danielle Jayewardene, Corals Recovery Coordinator, Pacific Islands Region 
  • Lance Smith, Pacific Islands Region
  • Chelsey Young, Pacific Islands Region

Critical Habitat Designation

Critical habitat only applies to U.S. waters. Of the 15 listed Indo-Pacific coral species, several species occur in U.S. waters. Critical habitat was proposed on November 30, 2023, in Guam, the Commonwealth of the Northern Mariana Islands, American Samoa, the Pacific Remote Island Areas, and Hawai'i.

Learn more about the Pacific Islands proposed coral critical habitat

Critical Habitat Contact

  • Lance Smith, Pacific Islands Region

5-Year Review

On January 7, 2021, we announced our intention to conduct 5-year reviews for the 15 listed Indo-Pacific coral species, as required by the ESA to ensure that the listing classifications of species are accurate.

We completed the 5-year review in 2024 and concluded that no change to the listing status was warranted for any of the 15 Indo-Pacific reef-building coral species.

Learn more about the Indo-Pacific reef-building corals 5-year review

5-Year Review Contact

  • Lance Smith, Pacific Islands Region

Key Actions and Documents

Actions & Documents

5-Year Reviews for 15 Threatened Indo-Pacific Reef-Building Corals

In 2021, NOAA Fisheries announced the initiation of a 5-year review for 15 Indo-Pacific reef-building coral species that are listed as threatened under the Endangered Species Act. These include: Acropora globiceps, Acropora jacquelineae, Acropora lokani…
  • 2021 Notice of Initiation and Request for Information (86 FR 1090, January 7, 2…
  • 15 corals 5-yr Review Report 2023
  • 15 corals Recovery Status Review 2023
Notice,
Pacific Islands
Published
April 2, 2024

Proposed Rule to Designate Critical Habitat for Indo-Pacific Corals

We, NOAA Fisheries, propose to designate critical habitat for five threatened coral species in U.S. waters in the Pacific Islands region, pursuant to section 4 of the Endangered Species Act. This proposal builds on and replaces a previous proposal in…
  • 2023 Proposed Rule (88 FR 83644, November 30, 2023)
  • Notice of Public Hearings (88 FR 88587, December 22, 2023)
  • 2020 Proposed Rule (85 FR 76262, November 27, 2020) (withdrawn)
  • Press Release
Proposed Rule,
Pacific Islands
Published
November 30, 2023

Announcement of a Recovery Planning Workshop for the 15 ESA-Listed Indo-Pacific Corals

We are convening a workshop to solicit facts and information from stakeholders and experts to inform recovery planning for 15 species of threatened Indo-Pacific reef corals listed under the Endangered Species Act. We will not be asking for a consensus…
  • Announcement of Recovery Planning Workshop (86 FR 15650, 03/24/2021) 
Information Gathering,
Pacific Islands
Published
March 24, 2021

Listing of 20 Reef-Building Coral Species Under the ESA

We, NOAA Fisheries, are publishing this final rule to implement our final determination to list the following 20 species as threatened: five in the Caribbean (Dendrogyra cylindrus, Orbicella annularis, Orbicella faveolata, Orbicella franksi, and…
  • Direct Final Rule to Revise Taxonomy (89 FR 81867, 10/09/2024)
  • Final Rule (79 FR 53852, September 10, 2014)
  • Proposed Rule (77 FR 73219, December 7, 2012)
  • 90-day Finding (75 FR 6616, February 10, 2010)
  • Status Review Report of 82 candidate coral species (2011)
  • Management Report for 82 corals (2012)
  • Petition to List 83 Coral Species Under the Endangered Species Act (2009) (PDF,…
  • Supplemental Information Report for 82 Coral Candidate Species (2012) (PDF, 158…
  • Literature Cited in the Final Rule
  • Final Management Report
  • U.S. Distributions of the 15 ESA-listed Indo-Pacific Coral Species
  • Field Identification Guide to the Threatened Corals of the U.S. Pacific Islands
Final Rule,
Pacific Islands
Southeast
Effective
October 10, 2014

More Information

  • Endangered Species Permits and Authorizations

Last updated by NOAA Fisheries on 04/28/2025

Documents

Document

Recovery Status Review for 15 Species of Indo-Pacific Reef-building Corals

Recovery Status Review for 15 Species of Indo-Pacific Reef-building Corals

Pacific Islands
Document

5-Year Review for 15 Indo-Pacific Reef-Building Coral Species

This document is the ESA 5-year review of the species based on the best available data.

Pacific Islands
Document

ESA-Listed Indo-Pacific Coral Species Recovery Planning Workshop Summary

Recovery planning workshop summary report that was held in May 2021 for the 15 U.S. ESA-listed Indo…

Pacific Islands
Document

15 Indo-Pacific Coral Species Recovery Outline

This document serves as an interim guidance document to direct recovery efforts for 15 Indo-Pacific…

Pacific Islands
More Documents

Last updated by NOAA Fisheries on 04/28/2025

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