Mermaids have undetailed pink nipples.

Instances of brief sexual intercourse and rape between the merfolk.

A whale bleeds to death after being hit by a torpedo, and a mermaids severed hand is seen.

Many people are implied to have died in the numerous underwater vehicles as they explode.

During a fight with a shark monster, the person fighting, and the shark both bleed heavily.

Tobacco use and a visual reference of a syringe.

The war, violence, and peril could be upsetting for sensitive younger children.