Slates

Single-page white slate — the standard
A flat white plastic slate is the simplest and most common underwater writing tool. A wrist strap allows you to wear it on your forearm for quick access without hunting through BCD pockets. The single-page slate suits most recreational diving uses: writing down a fish name to look up later, communicating a direction change, noting depth or time, or exchanging messages with a buddy when hand signals are ambiguous. Pencils write reliably on the plastic surface; pens do not work underwater.

Glow-in-the-dark slate — for night and low visibility
The glow-in-the-dark slate charges from ambient light before the dive and emits a soft green glow underwater — visible in low-light conditions without requiring a dive light to read it. For night diving where writing a message in the dark would normally require pointing a light at the slate and holding everything steady, the glow slate allows writing and reading in ambient conditions. It also serves as a visual reference point — if you set it down momentarily, you can see where it is. A practical upgrade from the standard white slate for anyone who night dives or dives in Canadian waters with reduced seasonal visibility.

Three-page folding slate — for complex dives
The three-page slate opens like a small book, providing three erasable panels: one for the dive plan, one for a site map or navigation reference, and one for running notes during the dive. Technical divers use three-page slates to write decompression schedules before descending and follow them during ascent. Advanced recreational divers use them to pre-draw a site map at the surface before the dive and reference it underwater. The wrist strap keeps it accessible during the dive. It is our most popular slate model — the additional panels make it substantially more useful than a single-page slate for anything more complex than a simple message.

Wetnotes — for permanent underwater records
A Wetnotes coil notebook uses waterproof paper rather than an erasable surface — notes written in pencil are permanent and survive being soaked, dried, and folded. This suits divers and underwater researchers who want to make notes that are kept rather than erased — scientific observation, species counts, equipment testing data, or detailed site mapping that needs to be referenced after the dive. The Wetnotes Deluxe comes in a Cordura cover with elastic pencil holder and 30 pages of waterproof paper. The paper also works above water, which makes it useful for boat-deck notes in rain and spray that would ruin ordinary paper. Our instructors love using their wetnotes for making notes about skills to use when teaching courses.