Never count the arms on the 'Octopus' in the corner. If you count eight, it isn't a Octopus. The octopus Jumpscares the starfish not for food, but to take its place.
Keep your eyes on the corners and wait 10 seconds for the Escape door. If the octopus mimics the texture of the Door, it’s watching you. If it mimics you, it’s already behind you. so BEWARE.