Googol and Googolplex have come back to earth to continue their scavenger hunt. Tutus, sand dollars and peacock feathers are on their list. Luckily Troy and Pippa are ready to help, and the ocean is nearby, but so is Martin Kelly, the boy next door, who will ruin everything if he gets a chance. Under the Sea with Googol and Googoplex is the second of three books in the Googol and Googolplex series. Book one is Down the Chimney with Googol and Googolplex. Book three is Over the Rainbow with Googol and Googolplex

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