One reference pertaining to mating. Very mild.

Nessie drags a man in a sleeping bag into the water. (No blood or gore)

2 deceased scuba divers are found underwater. (No blood)

Nessie eats a man who falls out of a raft. (Offscreen)

Nessie eats a scuba diver and some blood clouds the water. (As violent as this movie gets)

There is little to no gore in this movie and the special effects look ridiculously fake.

A couple uses of "damn".

None.

This is an incredibly goofy movie and the effects are laughable so it's not very scary. It may frighten younger audiences who aren't used to anything scary.