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.
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: 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 offer notebooks with plastic-based or coated pages that