What makes night diving attractive for divers is that underwater life and living species are not fully exposed when you dive during the day time. As the light source of night dives is a diver’s flashlight, you can see the true colors of the undersea. It is possible to see the bioluminescence of the platonic organisms which are the beauty of night dives.
For us, diving equipment is our first thought when it comes to night diving. The dive flashlights used in diving are a little different from the ones we use on land. Although the working principle is the same, underwater lighthouses are covered with gaskets. Each cover contains seals of different sizes to prevent water leakage and it is necessary to regularly care for these seals with grease oil. If the water leaks the flashlight can not work properly.
A difference compared to the lanterns we use on land is that the dive lights are very strong. Therefore, a diver who uses a dive flashlight should not hold a flashlight towards his own face or someone else’s face. Doing so may cause discomfort in the eyes or even temporary loss of vision. In addition, diving flashlights should not be left open on land. Because after a period of time due to high power, the flashlight bulb becomes hot and may explode or the reflector melts your flashlight and becomes unusable.
Also dive flashlights which we use to see our surroundings at night dives has another area of use as well. In the daytime spearfishing , we look under the rocks or into the hollows using the flashlights that we call the “under stone flashlight”. The diving flashlights allow us to see the creatures in these dark areas. Under-stone flashlights are smaller and weaker than night-dive flashlights.
DAYTIME: Everything begins to look gray at 30 feet underwater, even during the day. Many divers prefer at least a compact secondary light that is easy to carry, but also powerful enough to illuminate the dazzling colors underwater.
NIGHTTIME: Night divers are advised to have both a primary and secondary dive light for safety. For maximum visibility in nighttime waters, select a light with a wide, bright beam that will penetrate the darkness. When it comes to underwater lights, the general rule is the brighter the better.