You may be describing a photographic phenomenon of a setting sun colour on a pressure ridge. Water in the Southern Ocean is not red.
Well, technically the only way It can appear red is if there are sources of (generally light) that are red in color. You said sometimes so If you've been seeing red water at around sunrise/set its because of the sun. At the moment I cant currently think of any reason why water would sometimes appear red...
From the video of an Antarctic Tern preening, it does appear that this animal has webbed feet.
No, it's the Antarctic Bottom Water
alge is sometimes red or green the red is more comen in subzero temp.
Antarctic Bottom Water can only travel north.
No, red does not disappear in water. However, due to water's ability to absorb light, colors may appear dimmer or altered when viewed underwater.
Antarctic bottom water of the Southern Ocean is the coldest water on earth. Cold water is always found at the bottom of any combination of water temperatures.
Reflects blue light, absorbs red.
Black
75% of the Earths FRESH water is located in the Antarctic.
Yes, there is an immense quantity of water in the Antarctic but most of it is in the form of ice.
Antarctic bottom water is colder than either the Antarctic intermediate water or the Atlantic deep water. The North Atlantic bottom water doesn't flow far enough south to intermix with the Southern Ocean.