Octonauts Season 3

First Air Date: September 04, 2013

First Aired on	:	2013
Episodes	:	20 episodes

Episodes

3x20 The Loggerhead Sea Turtle (September 22, 2015)

After an undersea tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.

3x19 The Hammerhead Sharks (September 21, 2015)

The Octonauts meet some hammerheaded sharks, however, they can't sleep too well because Shellington and Professor Inkling have been arguing about who is smarter that they are no longer friends.

3x18 The Urchin Invasion (March 21, 2014)

The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to find the forest endangered by an infestation of kelp-eating urchins!

3x17 The Immortal Jellyfish (March 20, 2014)

Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever!

3x16 The Sea Sponge (March 19, 2014)

A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.

3x15 The Red Rock Crabs (March 18, 2014)

When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.

3x14 The Lion's Mane Jellyfish (March 17, 2014)

A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.

3x13 The Harbour Seal (March 14, 2014)

When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.

3x12 The Mudskippers (March 13, 2014)

The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.

3x11 The Sea Skaters (March 12, 2014)

When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of even tinier sea skaters - the only insects who live on the ocean.

3x10 The Duck-Billed Platypus (March 11, 2014)

While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.

3x09 The Barracudas (March 10, 2014)

Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.

3x08 The Yeti Crab (September 13, 2013)

As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab cuts a vital electrical wire in the ship and cuts off all power, endangering itself and the Octonauts.

3x07 The Sea Pigs (September 12, 2013)

The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - where there will be no access to food. But things get chaotic when Tunip goes missing!