Under the Sea Books for Toddlers

Discover the best under the sea books for toddlers. These ocean books are perfect for kids ages 1, 2, and 3 years old, and they’re sure to become favorites!

When you study the ocean with your preschoolers, keep your toddlers occupied with this wonderful collection of ocean books for toddlers. Their sturdy pages and bright colors make them perfect for even your youngest kiddos. 

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Below, I’ve featured just a handful of under the sea books for kids that will help your toddlers get excited about all things ocean!

You should be able to find them at your local library or book store. If you can’t find them locally, you can click each image cover to purchase them on Amazon.

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Hello, World! Ocean Life – All young children love to play in the waves at the beach. Now here’s a Hello, World! board book that teaches them all about oceans and the creatures and plants that live there.

ABC Oceans – Filled with eye-catching photos of 26 sea animals, it features fun facts about each creature even as it teaches the ABCs. Kids will love meeting the great white shark, jellyfish, narwhal, octopus, vampire squid, and more!

Ocean Creatures – Look at the beautiful creatures of the sea in this adorable board book featuring sea creatures kids will love. Paired with beautiful photos and approachable, colorful design, this board book is sure to inspire your child to want to learn more about the oceans.

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Mister Seahorse – When Mrs. Seahorse lays her eggs, she does it on Mr. Seahorse’s belly! She knows he will take good care of them. While he swims waiting for the eggs to hatch, he meets other underwater fathers caring for their babies.

Pop-up Peekaboo! Under the Sea – Turn the pages and lift the flaps of this delightful baby book to meet Diving Dolphin, Stripy Fish, and other exciting sea creatures waiting to pop out at you! 

Baby Beluga– Join this adorable baby whale in a busy day at sea, culminating in a warm mother-child bedtime ending.

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You Are My Baby: Ocean – Turn the pages to match the baby animals to their parents, and learn some early concepts along the way.

I’m the Biggest Thing in the Ocean – As the hubristic squid goes about bragging, babies and toddlers will get an eyeful of undersea life—from shrimp and jellyfish to turtles and more.

Guess Who: Ocean Friends – Hidden behind “peekaboo” flaps, a turtle, sea lion, lobster, clownfish, and shark are just waiting to be discovered.

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Little Dolphin Finger Puppet Books – This book features a permanently attached plush finger puppet and peek-a-boo holes in every page, giving parents and children a fun, interactive way to play and read together.

Good Night Ocean – Good Night Ocean explores whales, fish, crabs, eels, octopus, penguins, walruses, swordfish, seals, and sharks, battleships and submarines, beaches, islands, reefs, harbors, bays, icebergs, the Coast Guard, fishing boats, and more. 

On My Beach – Turn the colorful die-cut pages of this irresistible board book to discover just what makes little crab’s beach so cozy. Is it the soft sand? Is it the salty seaweed?

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Nerdy Babies: Ocean – Check out animals, plants, and fish that live in the ocean. Plus, learn about the unique ecosystem in this simple text written in question and answer format.

Deep Sea Dive – This exciting interactive board book lets kids explore the underwater world and learn about deep-sea creatures. They’ll meet a host of animals, from sharks and octopuses to puffer fish and sea turtles.

In My Ocean – Turn the colorful die-cut pages of this irresistible board book to discover just what makes little dolphin’s ocean so cozy. 

Which of these books about the ocean will you read first?

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Round Out Your Ocean Unit with These Activities

Toddlers and preschoolers will love this ocean life sensory bin! This kit contains everything you need for hours of fun.

Ocean-themed counters are perfect for counting and making patterns – two important preschool math skills. 

After reading Over in the Ocean with your preschoolers, they’ll love making some ocean animal clay art of their own. 

Kids can practice counting to ten with ocean counting flashcards

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