Diving flashlights are sealed and waterproof and can withstand underwater pressure to prevent water from entering and damaging the internal circuit. Its light source is usually brighter, which can help divers see the surrounding conditions in a dim underwater environment, including observing marine life, finding underwater routes, and checking equipment. Just like white light is used for normal lighting, red light can provide some lighting without scaring away some marine life, corals and tropical fish present bright and beautiful colors, because some marine life are not very sensitive to red light.
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