Kids love ocean animals. Between glowing jellyfish and toothy sharks, the marine world feels like an alien planet right here on Earth. If you need a rainy afternoon project or a weekend activity, these ocean projects bring marine life straight to your kitchen table.
Grab your glue sticks and scrap cardboard. We gathered 28 hands-on ocean crafts that teach marine biology while keeping kids occupied.
1. Paper Plate Pufferfish
Turn a simple paper plate into a spike-covered pufferfish. Kids paint the base yellow or lime green, then snip triangular notches around the rim to mimic sharp spikes. Add oversized googly eyes and folded paper fins to finish this reef dweller.
Quick tip: Use safety scissors with zig-zag blades to give the outer spikes instant texture without cutting each notch individually.
2. Egg Carton Sea Turtle
Turn empty cardboard egg cartons into swimming sea turtles. Cut individual cups from the carton to form the rounded shell, then let kids coat them in green and turquoise acrylic paint. Glue green craft foam flippers underneath and draw a smiling face on the head.
Sea turtles navigate across oceans using the Earth’s magnetic field. You can read more ocean animal facts directly from National Geographic Kids while you craft.
3. Glow-in-the-Dark Jellyfish
These deep-sea floaters bring the mystery of the ocean abyss into your living room. Paint small paper bowls with glow-in-the-dark acrylic paint and punch holes around the rim. Thread ribbons, yarn, and strips of bubble wrap through the holes to create long tentacles.
Hang these from a bedroom ceiling to create a glowing underwater scene at night.
4. Bubble Wrap Printed Octopus
Bubble wrap creates the perfect suction-cup texture for octopus arms. Cut an octopus silhouette out of thick cardstock, roll paint directly onto bubble wrap, and press it firmly against the eight arms. It leaves a crisp, textured pattern every time.
Octopuses have three hearts and blue blood, which makes this creature a favorite for science lessons.
5. Handprint Hermit Crab
Much like our favorite spring crafts for kids, handprint art captures early childhood milestones while letting kids get messy. Trace your child’s hand on red cardstock to form the claws, then attach a real painted seashell as the portable home. Add tiny beads for eyes and display your crustacean on the fridge.
6. Tissue Paper Coral Reef Collage
Build a colorful barrier reef using crinkled tissue paper squares. Children crumple magenta, yellow, and orange squares into tight balls, then glue them onto blue poster board. Layering these pieces creates realistic depth and teaches kids how coral polyps build massive living structures.
Check out the marine conservation projects at the Monterey Bay Aquarium to show your kids real reef habitats.
7. Coffee Filter Watercolor Clownfish
Spreading watercolor pigments create realistic clownfish stripes on round coffee filters. Have your child draw thick orange stripes with washable markers, then spray the paper lightly with water. Watch the colors bleed into a soft pattern before you cut out the fins and body shape.
8. Cardboard Tube Shark
Repurpose empty cardboard toilet paper tubes into predatory sharks. Paint the tube gray, cut a triangular mouth with sharp white paper teeth, and glue a dorsal fin on top. Kids can use these as tabletop finger puppets during playtime.
9. Seashell Crabs
Put your beach vacation souvenirs to work. Paint smooth clam shells bright red, then glue red pipe cleaners underneath for legs and pinching claws. Add two googly eyes on short wire stalks so your crab looks alert.
If your kids enjoy animal crafts, they will also like making ladybug crafts for kids with similar round shells and painted spots.
10. Ocean Sensory Bottle in a Jar
Sensory bottles provide calming entertainment for younger children. Fill a clear plastic water bottle halfway with tap water, add blue food dye, and fill the rest with baby oil. Drop in miniature plastic sea animals, silver glitter, and tiny shells for a floating wave effect when you tilt the bottle.
11. Cupcake Liner Jellyfish
Flatten patterned cupcake baking liners to form the dome of a floating jellyfish. Kids glue metallic ribbon, curling gift wrap, and embroidery floss beneath the scalloped edge. This low-mess project takes less than ten minutes, making it ideal for busy afternoons.
12. Clothespin Great White Shark
Build an interactive toy with basic wooden spring clothespins. Cut a paper shark horizontally across the mouth, then glue the top jaw to the upper wooden peg and the lower jaw to the bottom peg. When kids pinch the back of the clip, the shark snaps open to reveal a tiny paper fish inside.
This quick activity offers great entertainment with minimal prep work.
13. Fork-Painted Sea Anemone
Trade regular paintbrushes for plastic dinner forks. Dip the fork tines into pink and lavender tempera paint, then press outwards in radial strokes on dark blue paper. The spiky paint marks look like soft sea anemone tentacles waving in ocean currents.
14. Salt Dough Starfish
Bake long-lasting keepsakes using a classic three-ingredient salt dough. Mix flour, salt, and warm water, shape the dough into five-armed sea stars, and poke texture dots across the surface with toothpicks. After baking and cooling the shapes, paint them in sandy tan or coral tones.
Biologists classify these animals as sea stars rather than fish because they lack backbones and gills. You can read more marine classification guides at NOAA.
15. Paper Plate Submarine with Peek-a-boo Window
Every ocean explorer needs a trusty vessel. Paint a paper plate yellow, add a cardstock periscope, and cut a circular window in the center. Tape a clear plastic sandwich bag with your child’s printed photo behind the porthole so they look like a captain steering through the deep sea.
16. Popsicle Stick Anglerfish
Explore the ocean midnight zone with this deep-sea oddity. Glue three wooden craft sticks into a triangle, paint the frame black, and add jagged paper teeth. Attach a curved floral wire stalk to the top with a yellow pom-pom to mimic the anglerfish’s glowing lure.
17. DIY Floating Sponge Sailboats
Take craft time into the bath or backyard water table. Cut kitchen sponges into pointed boat hulls, push a wooden skewer upright in the center, and slide a foam sail onto the mast. Kids can blow through drinking straws to race their boats across the water.
These buoyant boats work well as outdoor water toys, much like our warm-weather August crafts for kids.
18. Yarn-Wrapped Sea Turtles
Build fine motor skills with a simple weaving exercise. Cross two wooden craft sticks into an X shape, then let kids wrap green and blue yarn around the center intersection to build a woven shell. Add a wooden bead for the head and draw eyes with a permanent marker.
19. CD Shiny Rainbow Fish
Put scratched compact discs to good use. The reflective back of a CD looks just like glistening fish scales. Glue on construction paper fins, a paper mouth, and a large googly eye to build a shiny creature inspired by classic children’s picture books.
20. Plastic Bottle Cap Crab Magnets
Upcycle red plastic beverage caps into kitchen fridge magnets. Glue red pipe cleaner legs beneath the rim, attach small paper claws up front, and secure a craft magnet inside the cap’s hollow base with glue. These small crabs hold your child’s drawings firmly on the refrigerator.
21. Marbled Shaving Cream Ocean Art
Spread plain white shaving cream across a baking sheet, drop blue liquid watercolors on top, and swirl the colors gently with a butter knife. Press heavy cardstock flat onto the foam, scrape away the excess cream with a ruler, and let the marbled blue pattern dry.
22. Cardboard Box Deep Sea Aquarium Diorama
Turn an old shoebox into a three-dimensional underwater display. Paint the interior dark blue, glue sand and small pebbles along the bottom floor, and hang paper sea creatures from the ceiling using clear thread. Cut a slit in the top lid so natural light illuminates the animals inside.
23. Toilet Roll Flying Squid
Squids use water jet propulsion to shoot backwards through the sea. Recreate this creature by painting a cardboard tube orange, gluing two triangular fins to the top, and cutting long crepe paper streamers from the base. Run around outside with the squid to watch the tentacles fly in the wind.
24. Button-Eyed Sock Whale
Give lonely single socks a second life. Stuff a blue or gray sock with cotton batting, tie or stitch the open end to form a whale tail, and sew on two dark buttons for eyes. Add a cluster of white pipe cleaners bursting from the top blowhole to finish the whale.
25. Sand Clay Sand Dollar Fossils
Mix two cups of play sand with one cup of cornstarch and one cup of warm water over low heat until the mixture thickens into dough. Flatten the dough into circular disks and press a seashell or star stamp into the top before air drying. These handmade fossils feel gritty and heavy like real beach finds.
26. Foil-Printed Bioluminescent Lanternfish
Crumple aluminum foil into a loose ball, dip it in metallic paint, and stamp it across black paper to build a glowing body shape. Dot yellow paint along the belly using cotton swabs to mark the photophores, which are the light-emitting organs that real lanternfish use to communicate in the dark.
27. Origami Jumping Dolphins
Fold simple origami dolphins using square blue craft paper. With six basic folds, kids produce sleek sea mammals that stand upright on flat surfaces. Glue them on top of corrugated cardboard wave shapes to show them leaping out of the water.
28. Clam Shell Pearl Keepsake Box
Glue two large clam shells together along their back hinges using a strip of flexible craft felt. Paint the exterior shells with pearlescent pink acrylic paint and glue a large plastic craft pearl inside the base. Children love hiding small coins and treasures inside this hinged shell box.
Bring the Wonders of the Deep Home Today
Crafting ocean animals teaches kids about marine ecosystems while building motor skills and creativity. Pick one project, gather your cardboard and glue, and build your own home aquarium today.