The men are seen in swimming shorts and the women are seen in bikinis.

Mai starts flirting with the man that lets them stay at his lodge.

Miki and Mai film each other changing into their bikinis

Nearly the whole movie shows bikini models frolicking on the beach or watching tapes of other bikini models frolicking on the beach.

Miki and Mai take multiple showers independently, in their bikinis.

A woman is in bed, she then takes off her t-shirt revealing a bikini.

There are some flashes and we see quick cuts of the bikini models dead in the water, surrounded by blood.

A man slides a knife between a Mai's breasts.

The lodge owner's fingernails are tainted with blood.

Blood spats on a video camera on the ground.

A bikini model is seen with blood on her face.

It's seen in Japanese subtitles, so I don't know.

None

The shark may scare young viewers.

A man sneaks up on a woman that's in the shower.

When a Miki is in the water, she sees a shark fin swimming towards Mai.