The Octonauts sing about Humpback Whales, Lemon Sharks and Blue Whales.

Beakman shares some interesting facts and features of whales. He talks about the blue whale and how it is the largest animal to ever live. He explains the differences between the two different types of whales based on their teeth.

Blue whales are the largest animals to have ever existed. Learn why they're larger than any land animal and why they were hunted for years, making them endangered.

The Octonauts sing aloud the characteristics of the Whale Shark.

The team learns about orcas, how they hunt and communicate, and their diet.