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The icy cold Arctic is home to both the powerful polar bear and intelligent orca, two mighty predators. But which animal is the fiercest of the ecosystem? Does the polar bear’s patience in stalking its prey and strength in attack put it on top? Or does the orca’s ability to work in a pod give it the edge?

You see a fin poke out of the water. It’s a big gray animal with a friendly face. It looks like a dolphin, but is it a porpoise? Dolphins and porpoises are similar, but they have some important differences. Find out how their fins, mouths, teeth, and behaviors can all help you tell these two animal look-alikes apart.

Did you know jellyfish aren’t really fish? These invertebrates have been around for millions of years. Listeners will enjoy discovering all the details about these interesting animals.

There are 13 different kinds of otters. But sea otters are the only kind that spends their whole lives in water! Listeners will enjoy learning all they can about these cute mammals.

¡Las ballenas azules son los animales más grandes que jamás hayan vivido en la Tierra! Pero no es fácil verlas porque están escondidas en las profundidades del mar.

Hi, there! I'm a great white shark. Don't let my sharp teeth scare you off. I started life much smaller, just like you!

¡Los tiburones blancos son los tiburones depredadores más grandes del mar! Viven en distintas partes del mundo, tienen muchos dientes afilados y pueden detectar la sangre a millas de distancia. Sumérgete en lo profundo del mar y descubre datos asombrosos sobre estos tiburones.

Animals come in all shapes and sizes. Some are cute and cuddly. Some are frightening and fierce. And some are downright strange! Have you ever seen a blobfish? This deep-sea creature looks like a swimming blob. How about a glass frog? You can see right through its skin to its beating heart! Take a look at these amazing animals and many more strange beasts.

Hi, there! I'm a sea turtle. I spend most of my days surfing in warm waters, but I started life much smaller! Learn more about my life cycle and how I went from a tiny little egg to a hatchling to an adult.

When David goes to visit the Marshall Islands, he learns and does many things he never thought he’d do, like swimming with sharks and sleeping in a hut! Best of all, he meets his cousin Betra, a girl with no fear who shows him all the fun things to do on the island. But then David learns a dark truth about the islands. A sea turtle is in danger, and he’s not allowed to help the poor animal. What should he do? Will he break the rules to save the turtle’s life? Or will Grandfather have the final say?

Mimi's school friends love playing hide-and-seek at recess. All of her classmates are great at camouflaging, which means they are great hiders. But no matter how hard she tries, Mimi can't change colors. She's convinced that since she's the smallest in the class, she will never be able to camouflage. Does being small mean that Mimi will always be bad at hiding?

Learn about Joe and Dad's attempts to catch fish for dinner.

A young fish wants to be able to play tag and other games with his friends, but first he must learn to swim.

When a group of whales live together, it's called a pod. Learn about life inside a pod of whales and why these animals like to stick together. Find out how living together with others helps whales hunt for food, communicate with one another, and raise their young.

Blue scales. Pink wings. Purple feathers. The animals in this book are far from boring.

Seals sit on chunks of floating ice. They're ready to dive into the freezing Arctic water at any moment. Learn more about what predators they watch out for and how they protect their young. Learn how seals find food, stay warm, and more.

A killer whale launches into the air creating a huge wave as it crashes back into the ocean. Find out how these great mammals live in the freezing waters of the Arctic. Learn what killer whales eat, and how they work together to hunt.

From sun up to sundown, this nonfiction book takes young nature explorers and zoologists through a day in the life of the emperor penguin. Discover their Antarctic home, eating habits, and fascinating behaviors. Plus, kids can continue exploring after the penguins go to sleep!

There’s a new baby joining the colony. It’s a sea lion pup! Learn all about baby sea lions, including what they eat, what they weigh, how they’re raised, and how big they grow.

There’s a new baby joining the pod. It’s a dolphin calf! Learn all about baby dolphins, including what they eat, what they weigh, how they’re raised, and how big they grow.