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Unknown, 2017
Current format, Unknown, 2017, , No Longer Available.
Unknown, 2017
Current format, Unknown, 2017, , No Longer Available. Offered in 0 more formats
Jack, his genius siblings, and inventor Hank Witherspoon go to Hawaii and help technology billionaire Ashley Hawking find out who is sabotaging her revolutionary electric plant that harvests energy from the deep ocean. Includes facts about the deep ocean, the scientific process, and green power, as well as instructions for an experiment.
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