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Seals and sea lions look very similar, and it’s sometimes difficult to tell them apart. Both marine mammals live in oceans all over the world. One has visible ear flaps, while the other has ears but no external flaps. One swooshes through the water using their back flippers, and the other uses their front flippers to swim through water. On land, one bounces along, and the other can “walk” on their hind flippers. Learn about the similarities and differences between these marine mammals in this latest addition to our Compare and Contrast Series!

What do crabs and lobsters have in common, and how are they different? While both animals live in the ocean, one prefers to swim and the other walks. One can be found in coastal tidepools and the other offshore. They both have skeletons on the outside of their bodies. There’s more to these animals than just being good food for us. Learn about these fascinating crustaceans in the latest addition to our Compare and Contrast Series.

Some ocean creatures are masters of disguise! They use camouflage and cover to outsmart predators or sneak up on prey. Some ocean animals blend in with sand, pebbles, and more. Others hide in coral reefs or beneath the ocean floor. Learn more about creatures that hide in the ocean!

¡Hola! Soy una tortuga marina. Paso la mayoría de mis días surfeando por las aguas tibias, ¡pero comencé la vida siendo mucho más pequeñita! Aprende más sobre el ciclo de mi vida, de huevito chiquito a cría y finalmente adulto.

Lift your tail and splash the water! It's time to share a day up close with a narwhal. See this whale's watery home, what it eats, and how it cares for its young.

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.

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!

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 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 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.

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?

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.

Snatch! A great white leaps out of the water to catch a seal. How did it get its dinner? It used its superpowers! From a super sense of smell to super speed, a shark’s body is built for one thing—hunting. Its nostrils can smell some substances 10,000 times better than people! Low light? No problem! A shark’s eyes see well in dim light.

Would you swim with sharks? Many people do! Marine biologists swim with sharks to learn more about these top predators. Snorkelers witness whale sharks and spy spotted leopard sharks. Some thrill-seekers even cage dive to get face-to-face with the giant toothy jaws of great whites!

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.

Big bodies. Razor-sharp teeth. Crushing jaws. Great white sharks are some of the most feared sharks. Some people say they seek out people as food. But this is a myth. Attacks on people are very rare. Some people say great whites live only in warm waters. This is a myth too! You can’t believe everything you hear! Listeners will bust more myths about these top ocean predators.

Great white, bull, and tiger sharks are some of today’s most talked-about sharks. But have you met the sharks of yesterday? Each prehistoric shark had its own amazing—and sometimes strange—features. The scissor-tooth shark had teeth in a spiral shape. The giant megalodon was about three times the size of a great white. One small prehistoric shark had a big dorsal fin in the shape of an ironing board!

Freshwater fishing is the perfect combination of relaxation and excitement. When you’re not peacefully looking out at the water, you’re reeling in the big one!

Deep, deep down, at the very bottom of the ocean, lies a secret world. Through lyrical narration, this story takes listeners on a journey to a place very few humans have ever been—the Mariana Trench. The imagined voyage debunks scary myths about this mysterious place with surprising and beautiful truths about life at Earth's deepest point.

Female orcas, or cows, lead an orca pod. They raise young and help the pod find food. Learn all about orcas and the important roles cows play to ensure the pod’s survival.

You have eyelashes. Your dog has eyelashes. But fish don’t! Why? You have questions, and this book has the answers. Find out about fish, including their body parts and behavior.

Hi, there! I'm a narwhal. You might not have seen me because I am very mysterious, but I bet you recognize my tusk! Learn more about my life cycle and how I went from a calf to the unicorn of the sea.

Everyone knows that fish swim. But are there fish that fly? You have questions and this book has the answers. Find out about the lives of certain fish and their unique abilities to move through the water.

Have you ever heard of a male fish that carries eggs? What about a fish that gives birth to live young? Young listeners will learn about seahorses, guppies, and other fish with unusual life cycles.

Octopuses have eight tentacles lined with suction cups. Their skin can change color, and they shoot black ink at their enemies. Find out more facts about these amazing sea creatures.