If you loved The Giant Behemoth, try Gorgo
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Eugène Lourié, and they both carry the 3am cult mood tag, and they sit in Horror / Science Fiction territory. If that's the register that drew you to The Giant Behemoth, the second film will land in a comparable space — through a different lens.
3am cult
What Gorgo is
Irish coast. Trawling nets, late summer. A roar. Two salvage men dredge up a massive, reptilian infant from the ocean floor. Londoners soon gawk at "Gorgo" caged for their amusement, unaware of what maternal horror ascends from the Atlantic deep. Eugène Lourié’s creature feature anticipates a certain kaiju calculus.

