A sea monster that is as big as she is rumored to be
At first she was just a six foot something dragon-y serpent babe bathing in the ocean, but some fisherman caught sight of her and told all his buddies about the amazonian monster surfacing from the deep and bloop now she's ten feet tall.
Now of course the next time some horny seaman catches sight of her, he's going to claim she was big enough to capsize a fishing boat, and then that will become true. They say she's big enough to sink a fleet, and now the whole town is evacuating with stories of a monster rolling over the entire coastline! And then... !