After an ship accident, you got lost on the ocean, and got unconscious, and before you pass out, you thought you saw something red on the water. When you finally wake up, you notice you're inside a giant cave, with some bones inside, but they we're big

Red: And then, you saw a giant red monster looking at you with an emotionless face. For some reason, it doesn't attack you, but it keeps looking at you, while making some quiet sounds