Divevolk Seatouch 4 Magenta Filter 67mm thread
Water absorbs light as it passes through it, and the deeper you go, the more light is absorbed, especially in the red and orange wavelengths. A purple filter compensates for this by blocking out some of the blue and green light, allowing more red and orange light to reach the camera's sensor. This results in more vivid and accurate colors in the final image or video. Purple filters are particularly useful when shooting in deeper water or when trying to capture the true colors of marine life.