Hide inside ship and hope she doesn't see
From Create Your Own Story
You don't know much about Monster Girls (just the horror stories) and you don't know if this species is intelligent enough to really find someone like you hiding. Unfortunately, the boat you're in isn't the most spacious, but you've done more with less in the past. Concealing yourself deeper in your ship is easy. You move supplies that won't make too much noise around you to shield your body. You wish you had more to work with, but you definitely have the edge in hiding experience. Just as you finish your shelter and eliminate your breathing sound, blue tentacles crawl over the edge of your boat. 'Fuck, those things are huge' You observe. "Hellooo? a distinctly feminine voice asks "Any yummy people aboard?"
She doesn't seem satisfied, and is poking around the ship with both her human arms and multiple tentacles. While tossing your stuff you decide...