Nora walks through an underwater base with deadly creatures sleeping on the roof. One creature extends its arm down in front of Nora for a good jump scare.
The ending reveals a large creature with many sharp teeth. This compared with a downer ending makes for a powerful and intense scene to end on.
All the characters are forced to crawl through a small space underwater. The last character is slowly pulled underwater. His head is seen being pulled downward before his leg snaps off. Very intense to watch.