主演：Ross Breen  泰莉莎·加拉赫  韦恩·格雷森  西蒙·格林诺  Shelley Longworth  Mary Mur..  

导演：内详  

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.