How did the loch ness monster get into the loch?

Answer:
The loch was once open to the ocean waters, and creatures such as plesiosaurs could easily have stayed there and adapted to the conditions, and continued to breed to maintain one or more Nessies in the Loch.
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First answer by Q182. Last edit by Q182. Contributor trust: 4 [recommend contributor recommended]. Question popularity: 1 [recommend question].