Another individual is shown with lesions oozing green blood while dying from radiation poisoning.

There's a brief fight between two characters.

In a scene set in the Enterprise's sickbay, a number of characters die, including one shown to be horribly charred and bloodied, who speaks for a brief moment with Kirk before dying.

There are a number of scenes of space combat between the Enterprise and the Reliant. During interior "explosion" scenes, crewmen of both ships can be seen to be killed in the blasts.

Bloody corpses are hung from rafters on Regula One by Khan's men.

Two characters are disintegrated by phaser fire; no gore is shown. One of these is a suicide, although in context it is a heroic self-sacrifice.

"Son of a bitch" is also heard once, GD is said in the first 10 minutes of the movie

Two characters consume a fictional illegal beverage; in real life, it would clearly be akin to hard liquor of some type, such as rum or whisky.

A man disintegrates himself with his own weapon which may upset some viewers.

The space battles are somewhat tense and frightening.

The main cast lives are in danger during much of the film as they are being hunted by another crew.

The Biblical Creation Story is refered to as "myth", which may upset Christians.

A worm-like and scary-looking Ceti eel is forcibly introduced into the ears of two characters; it is shown crawling into one man's, and both men are then shown screaming loudly in pain and/or terror.

A character runs into a bloody corpse hanging from the ceiling.