The three friends travel deep into the ocean to figure out why the blue whale sings, and Jane confronts a litterbug with a gifted voice.

A bug-sized Jane and Greybeard follow a monarch butterfly's journey to Mexico, leading Jane to seek assistance from Mr. Patel's green thumb.

Jane, David, and Greybeard monitor a black rhino and a red-billed oxpecker, whose relationship teaches them the value of teamwork.

Jane and David stay up past their bedtime to track a tiger that prefers to come out at night, and they stumble upon something in the garden shed.

Jane, David, and Greybeard try to sniff out why the gharial has a bulbed snout. A day at the pool points Jane toward an answer.

While trying to tag a great white shark, Jane urges David's dad and Tata to rethink how they shop for groceries.

The trio take off on a mission to aid the flying fox when Greybeard accidentally parachutes into a neighbor's yard.

Jane, David, and Greybeard must reunite a lost baby panda with its mother—and find out why they're the only bears with six fingers.

Jane, David, and Greybeard track a polar bear in the Arctic Circle, inspiring Jane to convince her neighbor Mr. Jin to see trash differently.

David shrinks Jane and Greybeard to honeybee size to explore a hive. But when a schoolmate threatens the bees, Jane swoops in.

Chasing a herd of caribou stirs up David's appetite. At lunch, David's grandpa tells a story about respect, responsibility, and sharing.

Tracking a wolf in the snowy mountains leads the trio to their neighbor's pug, who helps connect the dots between wolves, dogs, and people.

The three friends use their underground vessel to observe the elusive pink fairy armadillo, but a garden problem stops them in their tracks.

While exploring the Great Barrier Reef to determine if coral is a plant or an animal, the trio learn that looks can be deceiving.

With David sick in bed, Jane must partner with an unexpected ally to save Greybeard from a pride of lions.