At 50 feet over a brain coral, a standard mask shows a dark blue mass with gray shapes. With H2OGems, that mass explodes into neon green algae, fluorescent pink coralline algae, and the deep burgundy of a sea fan. Divers report that using H2OGems Scuba feels like diving on a planet that was previously black-and-white.
You might be wondering: Do I need to buy a whole new mask? h2ogems scuba