If you need to write while submerged, standard paper won't work. Divers use specialized materials designed for the marine environment: : Brands like Rite in the Rain
For creative projects, you can make these "paper" divers and ocean scenes: Underwater Slates & Other Diver Writing Devices Divers
: These use magnetized grains (similar to an Etch A Sketch) and are very easy to read underwater, though they can be bulkier than standard slates. Diver-Themed Paper Crafts If you need to write while submerged, standard
Depending on whether you're looking for something to take into the ocean or a fun project for land, here are a few ways to "come up with a paper" related to divers: These are popular for research, recording dive times,
offer notebooks with plastic-based or coated pages that can be completely submerged in salt water without disintegrating. These are popular for research, recording dive times, or mapping wrecks.