Oct 15
When leaving foggy San Francisco I noticed the ocean looked very grey. Gradually as we went south the ocean looked bluer and bluer. Now we’re off the coast of Melbourne and the seas once again look grey.
What I understand is that warm water causes the amount of red and green light to go deeper and leave the water looking bluer. Colder water is more dense thereby allowing less separation of the colors. Grey is cold and blue is warm.

