Adding external underwater strobes, also known as underwater flashes, to your underwater system is one of the most important additions in achieving great results in underwater photography. Underwater strobes allow you to bring out the correct colours underwater (for instance, you loose the red colour spectrum any deeper than 5m underwater). Correct usage of strobes allows you to reduce backscatter and gives you the ability to try different lighting options. After a camera housing, adding an underwater strobe to your system should be your first priority. Inon, Retra and Sea & Sea are popular brands of underwater strobes. We only supply underwater brands we have thoroughly dived and tested ourselves, so by selecting the brands we sell, you know you are buying the best underwater strobes available.