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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.
the pacific ocean is the largest of the world s five oceans followed by the atlantic ocean indian ocean southern ocean and arctic ocean it covers an area of about 155 million square kilometers about 60 million square mileshe largest land mass in this ocean is the continent of australia which is about equal in size to the 48 contiguous states of the united states there are some 25000 islands in the pacific ocean which is more than the rest of the world s oceans combined