The best children’s books for exploring the ocean

Why am I passionate about this?

I am a children’s book author who is awed by the ocean and the creatures that dwell in its depths. I love writing for kids because they’re unabashedly eager, enthusiastic, and curious! To write this book, I dove deep into researching information about the ocean. The more I learned, the more I wanted to know. I kept thinking, kids will love these fascinating facts and they’ll want to learn more. The wonderful books on this list tell amazing tales, take kids on adventures, and turn dry facts into a deluge of fun. These nonfiction stories offer kids opportunities to become immersed in our awesome ocean!


I wrote...

Book cover of Dream Submarine

What is my book about?

Climb aboard the Dream Submarine for a nighttime journey through the world’s oceans. Butterflyfish ripple through the reef. Sweetlips and snappers get their fins and faces scrubbed. Parrotfish snooze in slime sleeping bags while stargazers peep from beneath pebbly blankets. Dive deep to meet creatures that light up like fireflies. Rise to the surface relaxed and ready for bed. At the back of the book, trace your voyage aboard Dream Submarine on a map of the world, explore ocean zones, and discover fascinating facts about all the animals you encountered.

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The books I picked & why

Book cover of Ocean! Waves for All

Charlotte Gunnufson Why did I love this book?

I love that this book is narrated by Ocean!

The one and only ocean is cleverly presented as an epically awesome surfer dude who delivers a tidal wave of information in an entertaining way. Ocean describes himself as “a deep, layered soul” which is a really rad segue into the topic of ocean zones.

He invites readers to explore his depths, like hydrothermal vents, volcanoes, and those “totally tubular” tube worms! He briefly and gently reminds readers he needs their help. Ocean is a super cool bro and everyone’s best buddy in illustrations that are bright, colorful, and fun with a just-right watery vibe. 

By Stacy McAnulty, David Litchfield (illustrator),

Why should I read it?

1 author picked Ocean! Waves for All as one of their favorite books, and they share why you should read it. This book is for kids age 4, 5, 6, and 7.

What is this book about?

Dude. Ocean is incredible. Atlantic, Pacific, Artic, Indian, Southern - it's all excellent Ocean! Not part of any nation, his waves are for all. And under those waves, man, he holds so many secrets. With characteristic humor and charm, Stacy McAnulty channels the voice of Ocean in this next 'autobiography' in the Our Universe series. Rich with kid-friendly facts and beautifully brought to life by David Litchfield, this is an equally charming and irresistible companion to Earth! My First 4.54 Billion Years; Sun! One in a Billion; and Moon! Earth's Best Friend.


Book cover of Otis and Will Discover the Deep: The Record-Setting Dive of the Bathysphere

Charlotte Gunnufson Why did I love this book?

I highly recommend this true tale of deep-sea exploration!

The suspense is intense, compelling readers to keep turning pages. In 1930, two intrepid explorers climbed into a 5,000-pound hollow metal sphere and descended 800 feet into the ocean—farther than any human had ever dared to venture. They were amazed to find animals aglow in the ocean’s cold, dark depths.

Young readers (and older readers, too!) will be inspired by Otis and Will’s desire to know more, their persistent problem solving, and this remarkable feat of science and engineering. Over 90% of the ocean is still unexplored! Well-researched pencil, ink, and watercolor illustrations suit the story perfectly.

By Barb Rosenstock, Katherine Roy (illustrator),

Why should I read it?

1 author picked Otis and Will Discover the Deep as one of their favorite books, and they share why you should read it. This book is for kids age 4, 5, 6, and 7.

What is this book about?

The suspenseful, little-known true story of two determined pioneers who made the first dive into the deep ocean.

On June 6, 1930, engineer Otis Barton and explorer Will Beebe dove into the ocean inside a hollow metal ball of their own invention called the Bathysphere.

They knew dozens of things might go wrong. A tiny leak could shoot pressurized water straight through the men like bullets! A single spark could cause their oxygen tanks to explode! No one had ever dived lower than a few hundred feet...and come back. But Otis and Will were determined to become the first people…


Book cover of How the Sea Came to Be: And All the Creatures in It

Charlotte Gunnufson Why did I love this book?

I thoroughly enjoyed this book and believe young readers will, too!

It traces billions of years of ocean history from “when the Earth was young and new…so hot, rock melted and boiled,” through millennia of marvelous creatures, to the present day with children exploring the shore. In eminently readable rhyme, it conveys an impressive amount of information in an interesting and accessible way.

One of the best parts of the books is in the back: an ingeniously illustrated timeline. Illustrations are dynamic and dramatic, some literally exploding with color and action. They are a joy to look at and will certainly help kiddos understand the science concepts presented.

By Jennifer Berne, Amanda Hall (illustrator),

Why should I read it?

1 author picked How the Sea Came to Be as one of their favorite books, and they share why you should read it. This book is for kids age 6, 7, 8, and 9.

What is this book about?

The New York Public Library Best Books for Kids List (2023)

A lyrical, spectacular history of the ocean—from its dramatic evolutionary past to its marvelously biodiverse present.

“For millions of years these first bits of life
Became more, and then more, and then more.”

Long, long ago, when the Earth was young and new, the world was a fiery place. Volcanoes exploded from deep down below, and steamy, hot clouds rose up high. Rain poured down for thousands of years, filling the world’s very first oceans. There the teeniest stirrings of life began. Earth’s creatures grew bigger and bigger, evolving…


Book cover of The Sea Knows

Charlotte Gunnufson Why did I love this book?

I was delighted to discover this short, sweet, sciency book about the ocean.

Written in rhyme and framed by the reassuring phrase “the sea knows,” this book is ideal for the youngest readers. Many of the concepts and creatures presented are opposites. For example, “the sea knows huge,” one blue whale, is paired with “the sea knows small,” a multitude of tiny krill.

The watery world comes to life in bright, colorful illustrations that are cleverly composed to help kiddos understand the concepts introduced in the text. The back of the book is filled with facts about the plants and animals featured in the story.

By Alice B. McGinty, Alan B. Havis, Stephanie Laberis (illustrator)

Why should I read it?

1 author picked The Sea Knows as one of their favorite books, and they share why you should read it. This book is for kids age 4, 5, 6, and 7.

What is this book about?

Dive in and explore the wonders of the ocean and its inhabitants in this lyrical, fact-filled ode to the sea! This beautifully illustrated picture book features extensive nonfiction backmatter for further exploration.

We are young. The sea is old. The sea has secrets to unfold. The sea knows.

In this playful, rhyming celebration of the marine world, readers can explore all of the wondrous things the sea knows. It knows huge whales and small krill; it knows short crabs and tall giant kelp; it knows brightly colored starfish in shallow pools; and in the inky depths it knows the alluring…


Book cover of I Am the Shark

Charlotte Gunnufson Why did I love this book?

I laughed my way through this book about kids’ favorite ocean inhabitants!

In it, a silly shark presents a boatload of facts in a very funny way. Humor helps kids learn and remember! The story starts with a toothy, “Hey there!” from Great White Shark who introduces himself to readers as “the greatest shark in this book.” But another shark begs to differ—a whale shark who’s as big as a school bus.

Great White decides he must be the smallest shark. Nope. The smartest shark. Nope. The sneakiest shark? Wrong again. Off-the-hook hilarious illustrations make even the scariest shark entertaining and endearing.

By Joan Holub, Laurie Keller (illustrator),

Why should I read it?

1 author picked I Am the Shark as one of their favorite books, and they share why you should read it. This book is for kids age 4, 5, 6, and 7.

What is this book about?

What makes the great white shark (one of) the greatest fish in the sea? FIN-d out in this hilarious fish-out-of-water story that's perfect for Shark Week and all year-round!

"Don't miss this one." -School Library Journal, Starred Review

Hi! I am Great White Shark, and if you get this book, you'll read all about ME--the greatest shark in the sea!

Not so fast! Greenland Shark here, and as the oldest shark in this book, that makes me the greatest.

Did someone say fast? I'm Mako Shark, and I'm the fastest shark in this book! Eat my bubbles!

Wow, I'm Hammerhead…


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Nemesis and the Vault of Lost Time

By PJ Davis,

Book cover of Nemesis and the Vault of Lost Time

PJ Davis

New book alert!

What is my book about?

Featured in "Best Middle Grade Fantasy Books" - Reedsy Discovery

"Fun & Fast Paced, This is Middle Grade Fantasy at its Best!" — Shaun Stevenson

"If you know any middle-grade readers who enjoy science fiction/fantasy with a mix of action, danger, and humor - recommend this book to them, or just go ahead and give them a copy." — The Fairview Review

“With elements of adventure, exploration, other worlds, and fantastical science, Nemesis and the Vault of Lost Time is an exciting middle-grade novel with plenty of suspense… Behind the adventure are important messages about believing in oneself and finding inner strength.” — The Children's Book Review

"The plot of Nemesis and The Vault of Lost Time is a tapestry of surprises characterized by its unforeseen twists and turns. It’s this element of suspense that grips the readers, while the vivid descriptions create immersive visual experiences. Beyond its adventurous core, this mystery novel delves into themes of friendship and the nuanced dynamics of father-son relationships, offering a multi-layered reading experience." — The Literary Titan

Nemesis and the Vault of Lost Time

By PJ Davis,

What is this book about?

Thirteen-year-old Max is a daydreamer. It gets him into trouble at school, but his restless curiosity really turns problematic when he runs into a mysterious professor at his uncle's bookstore.

The old man informs Max that time is being sucked out of the planet by invisible bandits, stolen from unsuspecting people one breath and one sneeze at a time, and is being stored in a central vault. Once full, the vault will fuel a hungry horde of invaders looking to cross into earth, and cross out all its people.

What's more, the professor claims he knew Max's missing scientist father.…


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