Are you searching for a way to combine fun and education for your little ones?
Our under the sea crafts are your go-to source for ocean-inspired projects that entertain and educate. From making adorable jellyfish to creating vibrant sea turtles, these crafts will captivate children’s imaginations and teach them about marine life.
Explore the DIYs below, and for more interactive learning, our summer crafts for kids make an excellent addition to your kids’ invention adventures!
Under The Sea Crafts

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This project provides an excellent way for kids to improve their fine motor skills and embark on an underwater fantasy.
It creates a cute keepsake and offers a fantastic opportunity for you to encourage your kids’ imaginations around the mythical creatures of the ocean.
Bring Ariel's adventures to life with these little mermaid DIYs! While creating, you can discuss the themes of bravery, adventure, and friendship.
It is perfect for fans of the classic Disney movie.
Need another ocean craft idea? Try this cute mermaid toilet paper roll craft!
Make a splash with a jellyfish DIY to brighten your kids' day. While kids are making these, you can help them discover fascinating facts about these sea creatures.
It's also a great way to foster art and a love for aquatic environments.
Get ready for a jaw-some adventure with the shark idea! This exciting activity is perfect for kids fascinated by these incredible ocean predators.
These sharks can serve as educational tools during playtime, and after kids do this activity, you can discuss underwater habitats and sharks' roles in the ocean ecosystem.
Want another similar craft? Try out this shark name craft!
Bring the underwater world home with this octopus activity. Kids will love creating this eight-legged creature and learning about these intelligent sea animals.
This idea provides a fun opportunity to educate children about marine life and ocean conservation.
This project enables you to teach about mythical creatures and storytelling while nurturing your child's originality.
You can also use this activity to discuss themes of kindness, friendship, and exploring new horizons.
Create a whimsical paper plate crab that can be a playful addition to your summer-themed activities. This idea offers a great opportunity to excite your little ones and learn more about crabs and their habitats.
It's also an excellent way to develop fine and artistic motor skills.
Explore the ocean's wonders with various under-the-sea DIYs perfect for kids of all ages. From colorful fish to playful octopuses, these ideas are super simple and entertaining.
They are great for themed parties, classroom activities, or just a fun way to spend a day at home.
Transform a stack of colorful paper into an enchanting undersea adventure with this paper chain octopus craft.
This activity invites kids to create their own octopus by linking paper strips to form wiggly tentacles. As they glue and loop each piece, they'll practice essential skills like cutting and hand-eye coordination.
Turn a simple paper plate into a vibrant, tropical fish that swims right off the page!
Kids can create aquatic DIYs with colorful paints, adding underwater adventure to playtime.
For more paper plate fun, make this paper plate fish craft.
Create an underwater world with this fun ocean-themed activity! Transform wooden or paper mache eggs into adorable sea creatures like a sea turtle, a puffer fish, and a killer whale.
Kids will love painting and assembling these colorful ocean creatures.
These mermaids can become a central character in bedtime stories or imaginative play. After kids make this project, you can design a mini-theatre setup where they can use their mermaid puppets to perform short plays or skits.
This will encourage public speaking and teamwork as they script and act out their mermaid tales, complete with under-the-sea props and backgrounds.
This mermaid paper craft is another fun ocean idea!
Turn this turtle into a fun, interactive game where kids can race their paper plate turtles.
Adding a string mechanism allows them to compete to see whose turtle moves fastest, blending crafting with playful competition and motor skill development.
Create an undersea world with toilet paper! This idea is perfect for encouraging imaginative play and developing dexterity.
Kids can customize their mermaids with different colors and decorations, making each unique.
Get ready for a splash with this cute idea! This idea lets kids transform a paper plate into a friendly, gigantic whale.
It’s a great way to learn about whales and the ocean and an opportunity to enhance hand-eye coordination and color recognition.
Kids will also love this adorable whale handprint craft!
Create a dazzling rainbow fish with a simple paper plate and a splash of colorful paints. Kids can experiment with different hues and patterns, making each fish unique and vibrant.
This project encourages artistic expression and adds a burst of color to playtime.
Swim into a world of color with this project. Kids can turn simple paper plates into vibrant fish with scales made from various creative materials.
They will have a blast mixing and matching colors, patterns, and textures to make each fish unique.
This activity boosts resourcefulness and inventiveness, making it a fantastic way for children to explore their artistic abilities.
This project can also serve as an introduction to mythical creatures and the difference between real and fictional animals.
By comparing the narwhal to mythical unicorns, children can explore imagination, folklore, and how real animals can inspire myths and legends.
This starfish DIY can also be a sensory object for kids to touch and explore different textures and shapes, significantly benefiting younger children in developing their fine motor skills and sensory awareness.
Who knew science could be so much fun? This DIY allows kids to learn about these fascinating creatures while exercising artistic skills.
They can personalize their stingray with different colors and designs for a fun, educational experience.
Make a big splash with this whale project that is perfect for an afternoon of creative fun. Guide your kids in making these gentle giants of the sea, and you can start a conversation about whale songs, migrations, and more.
This hands-on activity promotes dexterity and encourages original thinking as kids personalize their whales.
Play pretend with this cute whale name craft!
Who says cardboard rolls are just for recycling bins? This project is about making something beautiful, a lesson in upcycling, and finding new uses for everyday items.
It also helps kids improve their hand-eye coordination.
This idea encourages fine motor skills development in a resourceful way. It's a fantastic way to introduce little ones to the ocean's wonders.
They can develop storytelling skills as they imagine their mermaid's underwater escapades.
They can also personalize their mermaid with unique colors and patterns, boosting their decision-making and artistic skills.
This DIY provides an opportunity to explore patterns and sequencing. By creating the paper chain, kids can learn to follow a sequence of steps and recognize repeating patterns, which are essential skills in both math and literacy.
The octopus can also be used as a visual aid in learning activities. Even teachers can use it to explain counting (counting the arms) or to illustrate stories and songs about ocean life, making learning more dynamic and visual.
Who knew a toilet paper roll could be so magical? With this activity, kids will learn to see the creative potential in everyday objects.
They will design and decorate their mermaids, practicing their artistic skills and imagination.
Also, try out this fun mermaid puppet craft!
Explore learning with this adorable octopus activity! Kids will enjoy creating colorful octopuses while engaging in hands-on play.
Each tentacle becomes a playful way to practice counting, turning math into an exciting underwater adventure!
Add to your ocean theme with this paper cup octopus craft!
Kids will love creating this swordfish DIY. They can design a swordfish complete with a long, pointy "sword" nose.
This activity is perfect for sparking an interest in marine life while allowing children to practice fine motor skills.
Create a magical treasure box perfect for storing little treasures and keepsakes such as jewelry, trinkets, or secret notes.
This activity allows kids to decorate their boxes with shells, glitter, and other sparkly items to make it mermaid themed!
Looking for a fun and creative DIY for your kids? How about letting them explore their artistic talents by turning ordinary seashells into vibrant, colorful fish?
This project is an excellent way for them to appreciate the beauty of nature and think about how to repurpose natural materials inventively.
Kids will also love this cute fish bowl paper plate craft!
Explore an underwater world with this project, where Dr. Seuss meets the ocean! Imagine creating cute fish inspired by those whimsical tales..
This activity boosts imagination and hone fine motor skills, helping kids dream up new ocean stories and invent quirky characters.
More Fun Kid’s Ideas
- 28 Colorful & Fun Paper Plate Summer Crafts
- 99 Best Animal Crafts For Kids
- 38 Fun Ocean Crafts For Kids

Sam is the crafter and founder of Simple Everyday Mom. She has been featured in Oprah Mag, Good Housekeeping, The Spruce Crafts, Country Living, The Bump and more. Read more.