“UFO takes to swimming?”,
9 November 1973
(St. Joseph Gazette, Missouri)
Two brothers, Raymond and Rayme Ryan, sighted a self-luminous underwater object in the Pascagoula River, Pascagoula, Mississippi on 6 November 1973, according to the article:
The unknown object followed their fishing boat.
The U.S. Coast Guard confirmed Raymond Ryan’s report.
Satellite photo of Pascagoula, Mississippi (tageo.com)