When Dashi is accidentally swallowed by a whale shark, the Octonauts venture inside the huge fish to rescue her. Episode two – The Octonauts And The Undersea Storm When Kwazii's Gup-B breaks down in a ...

A lost Pilot Fish who eats ocean gunk cleans up the Octonauts' dirty Gups - but he's still hungry! Meanwhile, Captain Barnacles must figure out why a Whitetip Shark is chasing the Gup-A!

A dangerous tidal wave washes all the fish up in the trees, which is also a big problem for the poison dart frogs who don't have enough puddles up in the trees for the tadpoles. Luckily, Tweak's new ...