: While not technically paper, these are the industry standard for quick communication. They are made of white plastic and used with a graphite pencil . You can erase the lead later using a Magic Eraser or a bit of sand.
: 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 Divers
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: : While not technically paper, these are the