Hollis Underwater Notebook Snorkeling - Full Face Masks and flexible customization to adapt

and flexible customization to adapt with your scuba gear setup

with optional heart-rate monitoring for real-time underwater data

dive lights

and/or cropping in post-production

Hollis Underwater Notebook Snorkeling - Full Face Masks and flexible customization to adaptThe Hollis Underwater Notebook is designed for scuba and diving sessions, providing a reliable place to capture observations, notes, and dive data during a session. Its waterproof pages stay legible when exposed to water, ensuring important details are preserved while exploring underwater. Included with the notebook is a pencil for immediate writing under pressure, allowing you to log observations as you move through your dive gear and environment.