This may seem like the most obvious tip but we will mention it anyway. In order to be a good at underwater photography, you need to start with the foundation. That means, you need to know how to swim and must possess uber water skills. If you do not know how to stay buoyant, how do you expect to take pictures that are well composed and well- lit? It isn’t just the quality of the pictures that might suffer. If you keep crashing into the reef while trying to take your shots, you will also be causing harm to the environment. Lastly, it is very important that you have knowledge of decompression sickness. Since it is easy to lose track of time during underwater photography, you can easily forget that you have a limited air supply to depend upon. In order to be a good photographer while underwater, you will need to be an adept diver and swimmer.
While you can engage in underwater photography during all times of the day, there is one slot when the pictures will turn out perfect. A bright afternoon is such a time since that is when sunlight is in abundance and travels deep into the water. However, you may not always have the freedom to pick that time for all your shoots. If you must take images while swimming in gloomy waters or are too deep for sunlight to make much of a difference, artificial light or flash can get rid of the shadows. Using such a light source will also help bring out the beautiful colors that are found underwater. In case your camera does not have a flash that is strong enough or there is no built-in flash, you can always rent an external one. Using an underwater strobe is yet another alternative. If you are using an external flash, it may make the particles between you and the subject light up, causing white spots to appear in the image. To avoid what is called backscatter, have the external flash placed at an angle towards the lens.