資料來源: Google Book

Dolphins at daybreak

It's sink or swim for Jack and Annie when the Migic Tree House whisks them off to the Middle of the ocean. Luckily, for they find a mini-submarine on a coral reff. Unluckily, they are about to meet a giant octopus and one very hungry shark. Will the dolphins save the day? Or are Jack and Annie doomed to be dinner?
來源: Google Book
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