1st grade 2nd grade 3rd grade 4th grade Kindergarten Ocean Themes

Oceans Theme

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Your children will learn all about the ocean with this fascinating week-long ocean theme! Just pick your favorite books and fun educational activities and you’re ready to go.

Oceans Unit Study filled with so many creative ideas for your complete lesson plan for kids in preschool, kindergarten, first grade, 2nd. (tons of free printables for under the sea) #oceantheme #undertheseatheme #preschool

Oceans Theme

Themes are a great way to make learning fun and keep kids engaged as they learn math, grammar, reading, writing, science, history, and crafts with a fun theme. Make sure to check out all our themes that are perfect for preschool, prek, kindergarten, and elementary age kids. Whether you call it an oceans theme or an under the sea theme – you are going to love all these ocean theme activities for kids of all ages!

Books to Read

Choose between these two options for using books in your weather unit study:

  • Read a different book each day of the week, Monday through Friday.
  • Read your favorite book (s) each day of the week. Kids love repetition, so don’t worry about your children getting bored!

Here are 5 excellent books about the ocean to read to your kids:


Under the Sea Theme

Day 1- Language Arts Activity

Ocean Language Arts

Try a fun language arts activity about the ocean such as these Free Ocean Fish Coloring Sheets. They’re perfect for improving fine motor skills!

Don’t forget to check out these awesome Ocean Themed Learning Activities!

Day 2 – Math Activity

Ocean Math

Pick a couple of these fun math activities to enjoy with your kids!

And don’t forget to calculate the size of a blue whale with this exciting STEM activity!

Ocean Craft

Ocean Art

Choose your favorite art activities to enjoy with your kids!

Don’t forget to print this Sea Drawing Prompt for your kids. They’ll have a fabulous time drawing underwater scenes.

Day 4 – Science

ocean science

Now it’s time for science! Encourage your kids to learn the names of sea animals with this funBump Game for Ocean Animals!

And if you’re looking for a different and fascinating science experiment or your older kids, you can’t go wrong with the Breeding Guppies Experiment!

Day 5 – Social Studies and Field Trips

ocean field trips and social studies

Kids will have fun learning ALL ABOUT WHALES with this printable unit filled with information, worksheets, pritnables, coloring pages, flashcards, answer key, tests, and more

Want to learn more about this amazing animal? Check out this huge resource for kids prek-8th grade to learn All About Whales.

About the author


Sara Dennis is a homeschooling mother of 6. Her goal is to help moms simplify their homeschools so they can give their kids an excellent education and thrive at home. She blogs at Classically Homeschooling.

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