Octonauts

The Octonauts venture into a dangerous red-hot lava tube to rescue a teeny tiny water bear who doesn't seem to mind the heat at all! SETTING: Lava caves. GEAR: Rovercam, heatproof suits, Octo-Goggles. Shellington and the Vegimals mission to replant a mangrove forest is put in peril by a school of toothy barracudas. SETTING: Mangrove forest. GEAR: mangrove root stilts, sparkly fish-biscuits.

Only Peso can save the day when a cone snail invades the Octopod and picks off the crew one by one with its dangerous harpoons. SETTING: Octopod. GEAR: Octopod. When an underwater storm destroys a small reef, which a frogfish and other creatures depend on, Tweak and her crewmates must convert the Gup-F into an artificial reef before another storm strikes! SETTING: Coral reef. GEAR: Gups.

When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down. GEAR: X-ray Viewer, treasure chest w/ keys. While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses. SETTING: Riverbed. GEAR: Gup-A vacuum, Peso's medical bag.

The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded. SETTING: Mangrove forest. GEAR: Octo mugs. Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever! GEAR: Booster Bubble JetPack.

Kwazii and Dashi get tangled with a siphonophore deep-sea creature. A hydrothermal geyser hurls it upward, and the Octonauts have to halt its rise to stop it from exploding. Scene: Deep trench, hydrothermal vents.

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! SETTING: Kelp forest. GEAR: Octo-grabbers.A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc. SETTING: Octopod.

When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work together to clean it up. GEAR: Octo-bins. The Octonauts study a group of baby hammerhead sharks, as they hunt on their own for the first time and poke their noses into trouble. GEAR: Gup-B in "Tiger Shark/Camouflage Mode."

When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends. GEAR: Octo-climbing claws. The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth! SETTING: Deep sea trench. GEAR: Gup-X, Giant kelpcake.

A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause. GEAR: X-ray Viewer, Sea-Spongeoscope (re-use of "Worm-cam" from "Midnight Zone" season 1). When an underwater tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle. SETTING: Seaweed forest. GEAR: Gup-X, Rover-Cam.

When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective: a harbor seal. As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab damages the ship, endangering itself and the Octonauts. SETTING: Midnight Zone. GEAR: Gup-X.

When the Octopod goes in for repairs the Octonauts take a vacation, and Peso accompanies Barnacles to help his sister and her new polar cubs learn to navigate the harsh conditions of the frozen arctic. SETTING: Arctic ice floes and ocean. GEAR: Octo Repair Station w/ Wonder Welder, Dashi's surfboard, Octo Alert collar buttons.

The Octonauts travel deep down the Amazon River in search of a lost city - and Kwazii's long lost grandfather, Calico Jack! SETTING: Amazon River & Jungle, Calico Jack's treehouse.

The Octonauts mission to explore Antarctica becomes a desperate rescue as a group of sea stars and urchins are threatened by a brinicle - a rare underwater icicle that can freeze creatures on the sea bed. SETTING: Arctic. GEAR: Gup-S w/ Octo-Sled & Shuttle, ice-drill, ice-proof camera & fish warming tank.