已完结
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主演：Ross Breen 泰莉莎·加拉赫 韦恩·格雷森 西蒙·格林诺 Shelley Longworth Mary Murphy Michael Murphy Paul Panting Rob Rackstraw 威廉·范德普耶 基思·威克姆 Jo Wyatt
简介： Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore - and when a geyser blasts it toward the surface, the Octonauts must stop its ascent before it fatally bursts.