Water color is usually the result of the type of algae that is growing in
the water...Lake Michigan has a very specific algae that blooms in September
making the llake the mst beautiful teal blue color while it is usually
stone gray or olive green during the other months.

"Scout" wrote in message
news
My ocean is green and has been for as long as I can recall. Bob posted
pics
of blue water just over yonder from me. What makes the difference between
the two?
Scout