One of our landings south of the Circle was at Lagoon Island, close to the British Rothera station. In very Antarctic weather (sometimes sunny, sometimes windy, foggy or snowing) we landed on this small island and were welcomed by large numbers of seals. The most obvious ones, all be it not the most active, were the Elephant Seals. They were hauling out on land in large groups, every now and then lifting their heads, making their characteristic sound.
One big male had separated from the group and was on his own at a small distance.