Underwater caves are dark. To navigate, it’s crucial to have powerful dive lights alongside. Such as this D28 3600 dive light, max output of 3600lm and runtime 2.5hrs. Beam throw can reach up 550m with focused beam angle 8°. It can light up the underwater world with your demand.
There are some amazing shots from cave diving instructors @expedition_divers and @jorammennesphotography. They have tested this D28 under Mexico Cenote, and given the feedback -“This light’s build quality is pretty good, loving the locking switch and it is quite bright. The spot just looks pretty good.”