Martin and Chris befriend a female white shark while on a mission to learn about the secret life of great white sharks. Gourmand looks for shark-fin soup ingredients.

After a young aardvark accidentally becomes a stowaway in Chris's backpack, the Wild Kratts team sets out to return him to his home burrow.

Aviva's sub prototype gets sucked into a battle between a sperm whale and giant squid.

Chris and Martin want to prove to Aviva that crocodiles aren't just scary brutes. They use a disguise to infiltrate a crocodile nest for a look at the challenging journey of the infant crocs.