This dataset the extent of coral reefs around Pohnpei. The data layer shown here is a subset of Pohnpei base layer. The original data, so-called Digital Line Graphs (DLSs), were created by U.S. Geological Survey (USGS) for the 1:25,000-scale topographic maps (2001). The shoreline was modified by by University of Guam (UOG) (2017) based on 2016 Worldview-3 satellite imagery from Digital Globe. The dataset was slightly shifted and also updated (mainly around Kolonia and its vicinity).
The Khaled bin Sultan Living Oceans Foundation has completed the World Reef Map, an online interactive coral reef atlas that allows users to explore all of the coral reefs and shallow water marine habitats mapped on the Global Reef Expedition. With over 65,000 square kilometers of shallow water marine ecosystems mapped, this is by far the largest collection of high-resolution coral reef maps ever made.
Map layers include Benthic Habitat Data, Bathymetry, Depth Contours and Habitat Videos.
The [Allen Coral Atlas](https://allencoralatlas.org/) combines high resolution satellite imagery, machine learning and field data to produce globally consistent benthic and geomorphic maps of the world's coral reefs. The Atlas is funded primarily by [Vulcan Inc.](https://www.vulcan.com) (founded by the late Paul G.
This dataset shows the global distribution of cold-water corals. Occurrence records are given for 86 Families under the subclass Octocorallia (octocorals; also known as Alcyonaria) and four Orders (in Class Anthozoa): Scleractinia (reef-forming corals), Antipatharia (black corals), Zoanthidae (encrusting or button polyps), and Pennatulacea (sea pens). Occurrence records are also available for the order sub-Order Filifera (lace corals) in Class Hydrozoa.
This dataset shows the global distribution of coral reefs in tropical and subtropical regions. It is the most comprehensive global dataset of warm-water coral reefs to date, acting as a foundation baseline map for future, more detailed, work. This dataset was compiled from a number of sources by UNEP World Conservation Monitoring Centre (UNEP-WCMC) and the WorldFish Centre, in collaboration with WRI (World Resources Institute) and TNC (The Nature Conservancy).
Status of the Coral Reefs in the Pacific and Outlook. Reports by the Global Coral Reef Network in collaboration with UNEP, IUCN and other agencies
Dataset that provides a direct internet link and resources pertaining to the CBD Global Coral Portal - a window to various sources of information on the status of coral reefs and the range of commitments, initiatives, and actions at different scales to protect and sustainably manage coral reefs and closely associated ecosystems in support of the achievement of the Aichi Biodiversity Targets and the Sustainable Development Goals.
The NOAA Coral Reef Watch program uses satellite data to provide current reef environmental conditions to quickly identify areas at risk for coral bleaching. Bleaching is the process by which corals lose the symbiotic algae that give them their distinctive colors. If a coral is severely bleached, disease and death become likely. Coral Reef Watch also offers a modeled Outlook that predicts the likelihood of coral bleaching heat stress on a week-by-week basis, up to four months in the future (the typical length of a bleaching season).
The Khaled bin Sultan Living Oceans Foundation completed field research for one of the largest coral reef studies in history: the Global Reef Expedition. The Expedition travelled around the globe surveying some of the most remote reefs on the planet, conducting research to assess coral reef ecosystem health and resiliency.
The Global Reef Expedition visited many countries in the Pacific Ocean to assess the health and resiliency of their coral reef ecosystems. See links below for more information, reports and maps.