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.
Sources
- Baltic Sea anomaly (en.wikipedia.org)
- https://www.marineinsight.com/maritime-history/the-baltic-sea-mystery-of-the-strange-ufo-object/ (marineinsight.com)
- https://medium.com/@iraua95/the-baltic-sea-anomaly-mystery-on-the-ocean-floor-23c989078d89 (medium.com)
- https://www.balticrun.com/ufos-in-the-baltic-sea-the-baltic-sea-anomaly/ (balticrun.com)