Strange triangular-shaped objects leaving the water off the coast of Poland were recorded in 1957, 1959 and 1961. Another case from 1959 involved a mysterious object that fell or crashed into Gdynia Harbour. Then there's the incredible story of a humanoid found nearby, one taken to a hospital for examination. This and more as Graeme Rendall explores the enigmatic mystery of the triangles and the oceans.
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