Watch Sgt. Frog 1-51 Episode 17 – Keroro vs. Natsumi: The Great Battle in the Water, Sir! / Fuyuki: Welcome to Horror World, Sir! online on animeTVplus with subtitles and HD playback.
← Episode 16 – Mois: Dark Mois Descends, Sir! / Mois: More and Mois Mayhem, Sir! All Sgt. Frog 1-51 episodes Episode 18 – Natsumi: Hilarity! Adult Beachside Story, Sir! →
Other seasons: Sgt. Frog 52-103
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