The mod currently adds a single new effect called water blindness which, when applied, will add an overly that severly impairs the vision when submerged under water.
Currently the only way to stop this effect is by applying the "minecraft:clears_effect" tag to any helmet you want. Currently the mod only supports a diamond helmet.
THE MOD IS MADE SPECIFICALLY FOR MY MODPACK "MINECRAFT:SHIPWRECKED" AND IS NOT ADVISED FOR USE IN A CASUAL SURVIVAL PLAYTHROUGHS.
IF YOU FIND THE MOD FITTING FOR YOUR OWN MODPACK YOU ARE FREE TO USE IT BUT YOU ARE NOT ALLOWED TO REDISTRIBUTE IT.