SL951 SeaLife 3X Macro Lens
To get the best results from your SeaLife camera, you want to use a Close Up Lens. This changes the focal length of the camera, and you can get much closer to your subject. Shooting from 2-4 feet away allows the strobe to bring out the colors, and the smaller objects and fish can fill your picture.
The picture below is an actual photo taken in Cozumel with the SL515 using the close up lens and the internal flash.
SL951 SeaLife 3X Macro Lens - Cameras