Use an easy HUGYFOT GOPRO FLIP RED FILTER for blue water.

On land, natural light contains all the colors of the spectrum. Reds rapidly deplete the deeper you go, and as light travels through the water column. A red filter attenuates overabundance of blue spectrum light, keeping available reds, restoring natural colors and improving contrast. Use a red filter for depths at or beyond 10 feet (3 meters). Filter performance is contingent upon available ambient light and visibility.

Red filters reduce the amount of pass through light reaching your camera lens. When diving in poor visibility or insufficient ambient light, filter effectiveness is reduced. In situations like this, Hugyfot recommends recording video or taking photos using video lights