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Panthalassa, also known as the Panthalassic or Panthalassan Ocean, (from Greek Ïá¾¶Î½ all and Î¸Î¬Î»Î±ÏÏÎ± sea), was the superocean that surrounded the supercontinent Pangaea. During the PaleozoicâMesozoic transition c. 250 Ma it occupied almost 70% of Earth's surface.
North America is surrounded by the Arctic Ocean to the north, the Pacific Ocean to the west and the Bering Sea to the east by the Atlantic Ocean and the Gulf of Mexico. The maâ¦jor oceans touching North America are the Atlantic and Pacific. 3 people found this useful.