{
  "schema": 1,
  "retrieved": "2026-10-18",
  "url": "/global-explore/reference-7ea9e10327e3e3ac.json",
  "bytes": 1324888,
  "sha256": "7ea9e10327e3e3ac5e8d38b4e93907c4648db945c7f1e1471ee3630f96eecd08",
  "featureCount": 5310,
  "reefRings": 1043,
  "sources": [
    {
      "id": "gebco",
      "title": "IHO-IOC GEBCO Gazetteer of Undersea Feature Names",
      "url": "https://www.gebco.net/data-products/undersea-feature-names",
      "service": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Undersea_Features/FeatureServer",
      "citation": "IHO-IOC GEBCO Gazetteer of Undersea Feature Names, www.gebco.net",
      "layers": [
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          "layer": 0,
          "records": 2632,
          "sha256": "c1f71c0e8e7835604fb1cfe8239478590f98421b34f357010587ae71c13f3e56"
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      ],
      "terms": "Public source permits use/reproduction with the requested citation; see ArcGIS item licenseInfo.",
      "anchorMethod": "Spherical mean of source geometry vertices. Representative label anchors only, not surveyed hazard positions or feature boundaries."
    },
    {
      "id": "natural-earth",
      "title": "Natural Earth major reefs",
      "version": "4.1.0",
      "url": "https://www.naturalearthdata.com/downloads/10m-physical-vectors/10m-reefs/",
      "download": "https://naturalearth.s3.amazonaws.com/10m_physical/ne_10m_reefs.zip",
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      "terms": "Public domain. https://www.naturalearthdata.com/about/terms-of-use/",
      "limitations": "Generalised major reefs and atolls from WDB2; incomplete and poorly defined in some areas. No current health, depth, navigability or hazard claim."
    }
  ],
  "limitations": "Reference atlas, not for navigation. No buoys, wrecks, obstructions, surveyed depths, tides or safe channels. Named banks/shoals are geographic features, not a hazard inventory. Retrieval date is not an observation date. Existing Natural Earth orientation labels reused unchanged outside Explore."
}