Water sky is a phenomenon that is closely related to Ice Blink
. Because it requires regions with large areas of ice and low lying clouds, water sky is mostly limited to the extreme northern and southern sections of our earth, in Antarctica
and in the Arctic
. When light hits the blue oceans or seas, some of it bounces back and enables us to physically see the water. However, some of the light also is reflected back up on to the bottoms of low lying clouds and causes a dark spot to appear underneath some clouds. These clouds may be visible when the seas are not and can show alert and knowledgeable travelers the general direction of water. Arctic explorer Fridtjof Nansen and his assistant Hjalmar Johansen used the phenomenon to find lanes of water in their failed expedition to the North Pole as did Bernacchi and Douglas Mawson in the Antarctic.
The Home of the Blizzard Douglas Mawson
The Phantom of the Poles William Reed 1906