[aturnis]

Originally Posted by mikeyis4dcats.

You wouldn't be able to tell. You would have to use a large amount of dye to get enough saturation to be visible when diluted amongst the hundreds of thousands of gallons of water. The diver's would be blinded, and the whole cove flooded with dye. And there would be a time delay in when the dye would travel so it's not like you can say exactly where the dye was at when it becomes visible in the shaft or across the island.

This.