I've developed a habbit of checking marinetraffic.com in between other duties.
Not sure if relevant, but there's activity around McMurdo station atm.
Various boats cruising on the ice is a regular occurence, it's what got me curious, heh..
https://www.marinetraffic.com/en/ais/home/centerx:175.3/centery:-73.9/zoom:3