Plankton, for example, absorb violets and blues, the colors transmitted best by clear water. Other waters, particularly coastal waters, contain silt, decomposing plant and animal material, and plankton and a variety of possible pollutants, which add their specific absorptions to that of the water. Orange is filtered out next, followed by yellow, green, and then blue. "In clearest water, long wavelength or red light is lost first, being absorbed at relatively shallow depths. Light color changes at depth and as a function of water particulates: ![]() ![]() We offer multiple colors, including a special red+blue "combo" unit that is ideal for diving at various depths. Illumination: 10 multiple flash-patterns, including solid-on for use as lantern and Coast Guard “SOS” Search and rescue (SAR): helicopter landing zones Mark personnel or victims: ID, illumination, safety, triage It is waterproof (80’) and so tough, you can run it over with a fire truck. No more chemical light sticks and cheap blinkers: This compact (4”) light emits 360° of ultra-bright LED light, visible for up to 10 miles away. SCUBA divers, especially those in law enforcement and emergency medical service (EMS) operations, currently have limited options for underwater lighting and safety/rescue beacons. ![]() Invented by a police officer, the PowerFlare Safety Light is an essential piece of equipment for SCUBA divers, boaters, and other sports enthusiasts.
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