Seasons & episodes

S5 · E25Bicolour Fangblenny Air date unannounced · 11 min＋

The crew must catch a mysterious fish that’s out to bite every creature in the reef.

S5 · E26Scaly-Foot Snail Air date unannounced · 11 min＋

The Octonauts meet strong scaly foot snails and enlist them in trying to help save the Octo-Lab from falling into a crevice.

S5 · E27Chinese Giant Salamander Air date unannounced · 22 min＋

The Octonauts head to the Yangtze River to help Min the Mapmaker, an old friend of Inkling's, who's been trapped by a mysterious creature. Turns out, It was just a Chinese giant salamander protecting her precious eggs, which have fallen ill due to rising water temperatures.