The Baltic Sea anomaly was located at the center of the Gulf of Bothnia.
Notes on verification
Wikipedia, Wikidata, and multiple independent secondary sources (Medium, Baltic Run, Marine Insight) consistently place the anomaly at the center of the Gulf of Bothnia/Bothnian Sea, with no contradicting sources found. [cascade flags: wikipedia_dropped_other_sources_exist | tier=unverified indep_score=0.3 clusters=3 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- Baltic Sea anomaly (wikipedia)
- https://www.marineinsight.com/maritime-history/the-baltic-sea-mystery-of-the-strange-ufo-object/ (corroboration)
- https://medium.com/@iraua95/the-baltic-sea-anomaly-mystery-on-the-ocean-floor-23c989078d89 (corroboration)
- https://www.balticrun.com/ufos-in-the-baltic-sea-the-baltic-sea-anomaly/ (corroboration)