While it could be clear that there could be less accessible light as you plunge further submerged, did you had any idea that varieties in light effect the varieties that will be noticeable to your eyes without a spotlight?
Will be drummed into you if and when you become affirmed, however all plunging gear, including your jump watch, requires some minor upkeep after each jump.
The main step, particularly assuming you’re making a plunge salt water, is to flush off your stuff with new water.