A global view of the Antarctic on 21 September 2005. This image presents the entire Antarctic region, most of the Southern Ocean, large portions of the southern Atlantic and Pacific Oceans, as well as the island of Madagascar and southern Africa. Image courtesy of NASA.
Dramatic photo of an orca (killer whale) hunting a Weddell seal in the Southern Ocean. Photo courtesy of the National Science Foundation Office of Polar Programs / Robert Pitman.
Orca (killer whale) sexes may be distinguished by their dorsal fins: male fins are straight, female fins curve. Photo courtesy of NOAA.
An orca mother-calf pair in the Ross Sea. Photo courtesy of the National Science Foundation Office of Polar Programs / Robert Pitman.