Crab Island: Sometimes clear blue water, sometimes not, why?

Some days, the water is so clear and so blue you would think you were on a beach in Fiji! But other times the water appears stained, more like a local lake. Why? It all depends on the tides. The clarity of the water on Crab Island in Destin, Florida, is significantly influenced by the tidal movements. Incoming tides and high tides bring in the cleanest, clearest water.