They also showed me some references and I realized they wanted something kind of dark, vintage, crafty, handmade style, like illustrated and animated cardboard layers . Animation wouldn't be super smooth, with a low frame rate, to give it that old touch.
I came up with the idea of connecting all the elements of this story (old Physics, explorer, sea monsters, travel...) through an old cartography and cosmology map.
I think it works very well because It enhances its mythic characteristics, creating a sort of structure of anticipation and fulfillment.
Soul Pigeons explained me that they imagined their protagonist as a scientist or an artist. So I imagined the protagonist as a kind of Galileo with the inventiveness of Leonardo Da Vinci and fast resources of Dr. Gatchet. I made some sketches and they love it immediately.