As these are presumably high school students on a class trip, they are all under eighteen.

While no genitals are shown, most of the characters are shown naked chest up from in front and fully from behind, including girls' breasts.

Multiple instances of cleavage and panty shots.

No genitals are shown, but a girl reaches her hand down between another girl's legs while they are naked in water. They embrace and kiss.

A boy removes his pants, intending to rape a girl's mouth. Nothing is shown.

A teen is shown naked, covered in presumably flesh eating larvae.

Most of the gore is not shown, yet can still be disturbing.

Multiple people are stabbed or cut by insect appendages.

People are sucked dry, bodies shown shriveling

A teen is cut in half. Blood, but no actual gore shown.

Something is seen moving under a teen's skin

A teen's eyes are mutated by infection and poke out from his sockets like antenna. Not bloody. Can be disturbing.

Various uses of profanity throughout the film, nothing overly terrible