Ocean Themed Math Activities
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These fun and playful ocean themed math activities are perfect for preschoolers. They’ll enjoy counting starfish, measuring seashells, and more!
Each activity is designed to help kids learn basic math concepts in a hands-on way. Plus, they’re a lot of fun too! So dive on in and explore the math-y depths of the ocean with these activities.
Add them to your preschool ocean theme this summer or to your preschool math centers any time of the year.
Math for Preschoolers
Math may not be the first thing that comes to mind when you think of preschool, but there are actually a lot of math concepts that young children can learn.
One of the simplest and most important math skills is counting. By teaching kids to count, you’re laying the foundation for more complex math concepts like addition and subtraction.
Another key math concept for preschoolers is recognizing numbers. Once kids can identify numbers, you can start teaching them basic math operations like adding and subtracting.
Additionally, preschoolers can learn about shapes and colors. Circles, squares, triangles, and rectangles are just a few of the shapes that kids can learn to identify.
And by teaching kids about colors, you’re helping them to develop important visual discrimination skills.
So don’t be afraid to incorporate some math into your preschool curriculum – your students will love it!
Ocean Themed Math Activities
The ocean is a great source of math inspiration for preschoolers. There are endless opportunities to count shells, crabs, and fish.
Sorting by size, shape, and color is another math activity that can be done with beach treasures.
Number recognition and simple addition and subtraction can be practiced by finding a certain number of shells or arranging them in groups.
Geometry is also all around us at the beach with sand castles, wave patterns, and shells of all shapes and sizes.
The next time you're at the beach with your preschooler, take some time to explore the math possibilities!
Not only will your preschoolers work on numbers and shapes with this fun ocean life activity, but they'll strengthen scissor skills as they cut strips of paper to finish each animal.
The best thing about this mermaid math activity is that you get to choose the math skills you will work on.
Kids can learn colors, counting, one-to-one correspondence, and more with this hands-on math activity that is perfect for your ocean theme.
These ocean kindergarten math worksheets are the best way to keep your little one engaged and learning their numbers!
With so many different activities, you won't be able get bored with these.
Check out this awesome bundle of ocean kindergarten resource today!
Looking for an engaging hands-on experience? These printable Counting Shells Math mats are perfect to combine math and fine motor skills in your preschool classroom.
With a beach theme, these activities will help teach numbers 1-10 while having fun!
Kids will trace the shape of the crabs on these worksheets.
They're great for recognizing shapes and sizes, or learning how to draw different types!
Get back to basics with this fun activity! Ocean count and clip cards are perfect for practicing counting skills and number recognition, all while having a good time.
Grab these ocean counting clip cards today and start practicing counting from 1-10 with your little ones.
If your little one likes to play around with numbers then they will have a lot of fun trying out these Free Printable Ocean Ten Frame Clip Cards.
They'll learn about counting and number sense as well! Download yours today!
Kids will practice counting by tens as they cut apart and reassemble these ocean-themed skip counting puzzles.
These no-prep ocean-themed math worksheets are perfect for practicing beginning addition facts.
Whether your students are working on number recognition, counting, or addition, this roll and cover game is just what you need!
These ocean-themed task cards are great for working on number recognition, counting, and fine motor skills.
I love book-based activities, and I bet you do, too! This size-sorting activity is based on the book titled I'm the Biggest Thing in the Ocean.
Your little ones will love ordering ocean animals by size.
Ocean Books for Preschoolers
Dive into the deep blue with our selection of Ocean Books for Preschoolers! These books are designed to captivate young minds and introduce them to the wonders of marine life.
Each book is filled with vibrant illustrations and engaging stories that bring the ocean’s mysteries to life.
From playful dolphins to colorful coral reefs, these books offer a window into the underwater world, sparking curiosity and fostering a love for nature in your little ones.
So, come aboard and let’s set sail on an unforgettable reading adventure!



Commotion in the Ocean – This delightful collection of poems includes fun rhymes about the creatures who live in and around the ocean. Children will delight in the snappy poems and colorful illustrations about whales, walruses, penguins, polar bears, stingrays, and sharks.
Over in the Ocean in a Coral Reef – This coral reef is a marine nursery, teeming with mamas and babies! In the age old way of kids and fish, children will count and clap to the rhythm of “Over in the Meadow” while puffer fish “puff,” gruntfish “grunt” and seahorses “flutter.”
Ocean: A Peek Through Book – Discover a world teeming with life beneath the waves, with graceful sea horses, darting tropical fish, electric eels, and humpback whales.

Preschool Ocean Math Worksheets
Now that you’ve checked out the ocean-themed math activities above, you might want some worksheets to reinforce the skills you’ve been working on.
If so, be sure to check out the preschool ocean math worksheets from right here on the blog:
- Preschool Ocean Worksheets – Work on number words, colors, and more!
- Ocean Animals for Kids – Work on number recognition and patterns
- Ocean Colors Playdough Mats – Work on color words
- Color By Number Ocean Animals – Work on number recognition and color words
- Ocean Animals Worksheets – Work on counting, number recognition, and graphing
More Ocean Animal Fun
Add some wooden sea animals to your pretend play area to inspire hours of imaginative play.
This ocean play set makes the perfect addition to your small world set ups and sensory bins.
Kids will love creating this gorgeous coffee filter ocean animal craft with free templates!
If you are looking for more ocean themed math activities to keep your preschooler engaged and learning, be sure to check out our other blog post on the topic.
We have a variety of fun and educational ideas that will get your little one excited about numbers, shapes, and more.
And as always, if you have any questions or need help finding resources, don’t hesitate to reach out to us. We are happy to help! Are there any ocean themed math activities that your child enjoys?