You heard noises come from the parts and services room, and you decided to check it out, there was a Shark animatronic that was rusted and there was some sort of blue glowing liquid inside throughout it's endoskeleton. They were powered off so you could either repair him or just leave him there... It seemed like he thrown into an Ocean and became rusted because of such, you also noticed his eyes gave off a faint yellow glow aswell.