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.