beaches.llc — the beach database, free to take.

WHAT THIS IS
  57411 beaches in 233 countries, built 2026-09-10 from OpenStreetMap (data as of 2026-09-10T12:53:06Z) and Wikidata.
  core.json, names.json, detail/*.json and sst.json are the whole of it; country/ and
  summary.json are counts cut from the same rows.

LICENCES — ONE PER SOURCE
  OpenStreetMap-derived data   ODbL 1.0, (c) OpenStreetMap contributors
                               https://www.openstreetmap.org/copyright
                               This database is a derivative and is offered under the
                               same licence (share-alike): use it, and share alike.
  Wikidata                     CC0 1.0 (no rights reserved)
  Photographs                  each file keeps its own Wikimedia Commons licence and
                               author, recorded beside it; follow the file's page.
  Water-temperature normals    NOAA OISST v2.1, 1991-2020 long-term mean (public domain)
  Places ("near ...")          GeoNames, CC BY 4.0, https://www.geonames.org/
  Country outlines             Natural Earth (public domain)
  Modelled conditions          Open-Meteo model output, CC BY 4.0 — fetched by your browser, not stored here

CORRECTIONS go upstream: every beach links to its OpenStreetMap object and Wikidata item.
Fix it there and it arrives in the next build.