<P> A baby, named Emilio Marcos de Palma, was born near Hope Bay on 7 January 1978, becoming the first baby born on the continent . He also was born further south than anyone in history . </P> <P> The MS Explorer was a cruise ship operated by the Swedish explorer Lars - Eric Lindblad . Observers point to the Explorer's 1969 expeditionary cruise to Antarctica as the frontrunner for today's sea - based tourism in that region . The Explorer was the first cruise ship used specifically to sail the icy waters of the Antarctic Ocean and the first to sink there when she struck an unidentified submerged object on 23 November 2007, reported to be ice, which caused a 10 by 4 inches (25 by 10 cm) gash in the hull . The Explorer was abandoned in the early hours of 23 November 2007 after taking on water near the South Shetland Islands in the Southern Ocean, an area which is usually stormy but was calm at the time . The Explorer was confirmed by the Chilean Navy to have sunk at approximately position: 62 ° 24 ′ South, 57 ° 16 ′ West, in roughly 600 m of water . </P> <P> The Southern Ocean, geologically the youngest of the oceans, was formed when Antarctica and South America moved apart, opening the Drake Passage, roughly 30 million years ago . The separation of the continents allowed the formation of the Antarctic Circumpolar Current . </P> <P> With a northern limit at 60 ° S, the Southern Ocean differs from the other oceans in that its largest boundary, the northern boundary, does not abut a landmass (as it did with the first edition of Limits of Oceans and Seas). Instead, the northern limit is with the Atlantic, Indian and Pacific Oceans . </P>

When did the antarctic ocean become an ocean