Fog ghost rainbow arc on the sky shore
The white rainbow forms when light interacts with much smaller drops, such as those in fog. These are too thin to act as a prism. Instead of refracting light, these droplets simply diffract or scatter it. The water droplets that make up the fog are then so fine and so close to each other that the light cannot pass. The white rainbow is called Fogbow (arc of fog), or Ghost rainbow.
05/15/2023