Underwater hydrogen bomb testing awakens a fire-breathing monster from its centuries-long sleep, and it soon starts to terrorise Japan.
Godzilla (1954)
Influences
for Influences in Nessie
Suggested by jpstudios11
The Loch Ness Monster, Nessie, begins a series of attacks on humanity. Venturing out from the North Sea, the monster starts attacking and sinking ships in the Pacific Ocean.