← Back to filmFilm · CastFull castThe Octonauts & the Great Summer AdventureOn screenCast8 credited performersSimon GreenallBarnacles (voice)Rob RackstrawKwazii (voice)Paul PantingPeso (voice)Keith WickhamProf. Inkling / Dr. Shellington (voice)Jo WyattTweak (voice)Teresa GallagherDashi (voice)Artwork unavailableMichael C. MurphyTunip (voice)Artwork unavailableRoss BreenBarnacles (singing voice)
