The Blue, the Bluer, and the Bluest Ocean

The Blue, the Bluer, and the Bluest Ocean
"Bottom line: Low nutrients + low phytoplankton + low chlorophyll =  very clear, very blue water.
Where in the world can the deep blue of the ocean be seen without traveling to Easter Island?
If traveling to Easter Island is out of the question – there is a unique place in the United States that provides a window on the clear blue of the ocean. That place is Crater Lake in Oregon."