Hi there - Underwater photography is very exciting, but safety must always be your first concern. When shooting, it is always best to go wide-angle as it will allow you to get colorful, detailed photos. Also, be sure to check your exposure on the camera’s LCD to make sure you are getting the shot your are looking for. In some cameras like the W300, they include a Underwater Scene Mode that automatically sets the camera's settings to ensure you are getting the very best photos possible. For more tips, be sure to visit Nikon Learn and Explore for more tips for capturing underwater photography.