Main female character is quite obviously not wearing a bra during later parts of the film.

A man is held at gunpoint by soldiers. No one is injured.

People are hurled to the floor after an explosion.

A woman slaps a man in anger. He is not seriously injured.

One character falls from a great height and ends up unconscious and in critical condition, but is healed bloodlessly by scifi technology.

A punk on a bus is non-violently rendered unconscious. Played for laughs.

During a tour of an aquatic facility, a tour group that includes the main characters is shown real footage of whalers butchering dead whales. This is accompanied by the tour guide describing the plight of the animals and their endangered status, and fits in with the film's overall "save the whales" message.

Two uses of "shit".

"Son of bitch" is said once.

2 uses of "dipshit", 3 uses of "dumbass", 1 use of "ass", 1 use of "son of a bitch", 17 uses of "hell", 2 uses of "goddamn", 10 uses of "damn".

A man and woman drink beer from glasses at a restaurant.

Kirk tries to disguise Spock's alien nature from Gillian by claiming he did "too much LDS" (meaning "LSD") in the '60s.

A spaceship crash lands.

The critical injury of a main character is frightening.

Through most of the film the main characters are on a mission to save the entire planet from destruction.

Slightly trippy time-travel scene may be somewhat unsettling for small children.