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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.
Other than the conflicts surrounding Europe and Asia, the other continents are more clearly, but not perfectly, separated from one another. In reality, North America and South America are joined by the Isthmus of Panama. Likewise, Asia and Africa connect to one another at the Isthmus of Suez.