Gorgo (1961)

When an undersea volcano sends tremors throughout the Atlantic, aquatic creatures come out of hiding. Merchant seamen Joe Ryan and partner Sam Slade harness the most unusual of the lot, a massive beast that looks like a Tyrannosaurus Rex. The enterprising sailors deliver their quarry to a British circus, but it turns out that the animal is a newborn. And, when his much larger mother arrives in London to rescue her son, the city feels her wrath.
Eugène Lourié
Bill Travers, William Sylvester, Vincent Winter, Christopher Rhodes, Joseph O’Conor, Bruce Seton, Martin Benson, Maurice Kaufmann, Basil Dignam, Barry Keegan, Tommy Duggan, Howard Lang, Dervis Ward, Mick Dillon
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