Sea Life Adventures
Clownfish peek out from among swaying sea anemones while sea turtles glide peacefully through the water. Schools of colorful fish drift together until, suddenly, they scatter as a shark swims by.
The ocean is filled with fascinating creatures and exciting discoveries waiting to be explored. Whether you’re planning a visit to an aquarium, spending a day at the beach, or simply learning about sea life from home, these hands-on activities will spark curiosity and encourage children to explore the amazing world beneath the waves.
Designed primarily for preschool and kindergarten children, this collection includes math, art, creative writing, dramatic play, and a simple science experiment inspired by life in the ocean. You’ll also find free printables, recommended books, and extension activities to make your sea life adventure even more memorable. Many of the ideas can easily be adapted to engage older children as well.
Ocean Poems for Kids
Add a little poetry to your sea life study with these short ocean rhymes. Read them aloud together, encourage children to repeat the lines, or add simple hand motions to turn them into an interactive language activity:
Starfish Sam, with arms of five,
lies still upon the sand,
But when I go to pick him up,
He wraps around my hand.
Jonathon, the hermit crab
lives deep within the sea.
Whenever his house becomes too small
He leaves it here for me.
I have a little seashell.
It’s pretty and it’s white.
If I hold it to my ear like this,
the sea I hear inside.
Poems © 2026 Lillian Elmore. All rights reserved.
10 Fun Sea Life Facts
- ⭐ Sea stars aren’t actually fish. They don’t have fins, scales, or gills. Scientists commonly call them sea stars.
- ⭐ Not all sea stars have five arms. Some species have many more!
- 🪼 Jellyfish are about 95% water. They don’t have a brain, heart, or bones.
- 🐙 An octopus has three hearts. Two pump blood to the gills, while the other pumps blood through the rest of its body.
- 🐙 Octopuses can squeeze through very small spaces. Because they don’t have bones, their soft bodies can fit through openings much smaller than you might expect.
- 🐴 Male seahorses carry the babies. The female places her eggs into a pouch on the male, where they develop until he gives birth.
- 🦀 Crabs have a hard outer covering called an exoskeleton. As a crab grows, it must shed its old exoskeleton and grow a new one.
- 🦈 Sharks don’t have bones. Their skeletons are made of cartilage—the flexible material found in our noses and ears.
- 🐢 Sea turtles breathe air. Even though they spend most of their lives in the water, they must swim to the surface to breathe.
- 🪸 Coral is made by animals, not plants. Coral reefs are built by tiny animals called coral polyps.
Watch & Learn
- Ocean Animals for Kids | Learn all about the Animals and Plants that Live in the Ocean–Learn Brite [This video is more of a geography video. It tells of the different oceans, shows maps, plants that grow in the ocean and lists several different types of animals that live in the ocean. It does comment on the following vocabulary words for this topic: seaweed, coral, crabs, sea turtles, shark, fish, octopus, and jellyfish.]
- Sea Animals for Kids | Sea Creatures for Kids | Learn Sea Animals for Children with Speedie DiDi [This is for toddlers. It contains information on sea turtles, jellyfish, stingray, crab, shark, sturgeon, alewives, and pollock]
- Takes a Dive | Coral Reefs | Sharks | Underwater Habitats | Full Episode | The Magic School Bus [Covers ocean partnerships, and touches briefly on pollution killing coral reefs]
- Wild Kratts – Ocean Explorers | Kids Videos–Wild Kratts [Parts of their shows–Focuses on hermit crabs, sharks, orca whale, anglerfish, coral reefs, pollution (small bit), lobster, seahorses, bioluminescence, echolocation, dolphins, sea otters, shells, and blowfish]
- Under the Ocean. All about the Ocean for Kids – Kids Academy [Talks about the depths of the ocean — The sunlight zone, the twilight zone, the midnight zone, the abyss and the trenches. It also gives a few of the animals that live in each zone: sea turtles, coral reef, clownfish, jellyfish, lanternfish, anglerfish, extremophiles, and talks a little about bioluminescence. There is a recap at the end and a question.]
To Read
- Commotion in the Ocean by: Giles Andreae
- Way Down Deep In The Deep Blue Sea by: Jan Peck
- Mister Seahorse by: Eric Carle
- The Pout-Pout Fish by: Deborah Diesen
- National Geographic Little Kids First Big Book of The Ocean by: Catherine D. Hughes
Hands-On Learning
Math
Starfish Sort By Size worksheet. Help young learners practice comparing sizes with this FREE Starfish Sort by Size printable! Children cut out the starfish and sort them into small, medium, and large on the included sorting mat while building early math and classification skills through hands-on learning. Print on cardstock and laminate the starfish and sorting mat for a durable activity that can be used again and again. Click on the image below to download your free worksheet.
Add a little hands-on math to your sea life study with this FREE Sea Life Graphing activity! Children cut out the sea animal pictures and glue them into the matching columns before using their completed graph to compare the results. It’s a fun way to practice counting, graphing, comparing quantities, and interpreting simple data while also strengthening scissor and fine motor skills. Click on the image below to download your free worksheet.
Creative Writing
Encourage children to combine creativity and writing with this Sea Life Writing Prompt! Invite children to draw the sea animal they would most like to have as a pet. Then, they can write why they chose it or dictate their ideas to an adult, who can write them down.
The download includes two writing page options to support different skill levels. Beginning writers can use the page with primary handwriting lines, while more confident writers can use the regular lined page.
This activity encourages children to organize their thoughts, build vocabulary, and express their ideas through both art and writing. Whether children write independently or dictate their responses, they are developing important early literacy and communication skills. Click on the image below to download your free worksheet.
Science
Water Splash Experiment
Discover what happens when you make a splash! This simple science activity helps children observe how water moves when a force is applied. It’s a fun way to connect science to the ocean, where waves crash, fish leap, and whales splash back into the water.
You’ll Need:
- Aluminum pie pan or other shallow pan
- Water
Directions:
Fill the pan with about ¼ to ½ inch of water. Invite your child to gently slap the surface of the water with an open hand and watch what happens. Repeat several times, trying different amounts of force to see how the splash changes.
Talk About It:
- What happened when you slapped the water?
- Did the water always splash the same way?
- What do you think caused the splash?
- Where have you seen water splash before?
- Can you think of sea animals that make a splash?
Why Did It Happen?
When your hand hits the surface of the water, it pushes the water out of the way. The water moves quickly in different directions, creating a splash. Sea animals create splashes, too! Dolphins jumping, whales breaching, fish leaping from the water, and crashing ocean waves all move water in similar ways.
Art
Swimmy Seahorse
Cut out the orange seahorse and either tear thumb-size pieces of a paper grocery bag to glue atop the seahorse, or use the cut-and-paste page of brown squares. Glue on a button, or a wiggle eye. Click on the image below to download your free worksheet.
Awesome Octopus Art
Cut out the octopus and decorate its tentacles by gluing Styrofoam packing circles along one side of each tentacle or use the included cut-and-paste paper circles. Finish your octopus by adding wiggle eyes or marble eyes for a fun finishing touch. Click on the image below to download your free worksheet.
Studly Starfish
Cut out the starfish and glue round cereal pieces, such as Cheerios®, along the dotted lines to create a fun textured starfish. As children work, encourage them to count each cereal piece to reinforce early math skills. Click on the image below to download your free worksheet.
Jiggly Jellyfish
Cut out the jellyfish and use a hole punch to make holes where the white circles are located. Tie pieces of curling ribbon through the holes to create the jellyfish’s tentacles. Children may add one or more ribbons to each hole for a fuller jellyfish. Curl some or all of the ribbons by gently pulling them across the edge of a pair of scissors with adult supervision. Finish the craft by adding wiggle eyes and a yarn smile, if desired. Click on the image below to download your free worksheet.
Encourage children to count the ribbons as they tie them onto the jellyfish or create a pattern using different ribbon colors.
Clacking Crab
Cut out the crab. Cut two sections from a Styrofoam egg carton and glue them onto the front claws to create fun three-dimensional pincers. Glue two pom-poms onto the eye circles to make raised eyes. Click on the image below to download your free worksheet.
Flashy Fishy
Cut out the fish. Use pinking shears or decorative scrapbook scissors to cut strips of scrapbook paper and aluminum foil. Glue the strips onto the fish, overlapping them slightly to create colorful, shiny scales. Trim any paper that extends beyond the edge of the fish. Finish the craft by adding a pom-pom eye. Click on the image below to download your free worksheet.
Dramatic Play
Go Fishing!
Bring the excitement of fishing indoors with this fun, hands-on sea life activity! Spread a blue sheet or blanket on the floor to create an ocean.
Make a simple fishing pole by tying a piece of string to a wooden dowel or stick. Attach a small magnet to the end of the string.
Download the free Sea Life Fishing Printable included in this post. Print the sea creatures on cardstock, let children color them, and cut them out. Tape or glue a paper clip to the back of each sea creature so they can be “caught” with the magnetic fishing pole.
Scatter the sea creatures across the “ocean” and invite children to see what they can catch. As they fish, encourage them to identify each sea creature, count how many they catch, sort them by type, or tell a story about their ocean adventure.
For even more fun, add a small bucket, toy fishing net, or a few seashells to create an exciting ocean-themed play area. Click on the image below to download your free patterns.
Seafood Bar Dramatic Play
Encourage imaginative play with this Seafood Bar dramatic play activity! Print the Seafood Bar sign and menu to create a simple pretend restaurant at home or in the classroom.
Invite children to color the menu and write pretend prices beside each sea animal. For repeated use, laminate the menu and use a dry-erase marker so children can change the prices each time they play.
Children can take turns being the customer or the restaurant worker as they choose items from the menu, take orders, and serve pretend meals.
Extend the fun by adding play dishes, aprons, a toy cash register, pretend money, notepads, or plastic sea animals. As children play, encourage them to practice polite manners, use complete sentences, and use sea life vocabulary.
This simple dramatic play activity encourages creativity while helping children develop communication, early writing, social skills, and imaginative play. Click on the image below to download your free patterns.
Extend the Learning
Keep the sea life fun going with these simple hands-on activities!
- 🐠 Visit an Aquarium – Observe fish, sharks, jellyfish, sea turtles, and other sea creatures. Encourage children to talk about the colors, shapes, and movements they notice.
- 📚 Read Sea Life Books – Enjoy picture books and nonfiction books about the ocean to build vocabulary and learn interesting facts about marine animals.
- 🐚 Create an Ocean Sensory Bin – Fill a shallow bin with blue rice, blue water beads (for supervised play), kinetic sand, or shredded paper. Add seashells, plastic sea animals, scoops, and small containers for imaginative play.
- 🎣 Go Fishing Indoors – Use the printable Fishing Activity with a homemade fishing pole made from a dowel rod, string, and a magnet. Count, sort, and name each sea creature as it is caught.
- 🎨 Make Ocean Crafts – Create jellyfish, octopus, starfish, coral reefs, or sea turtles using paper, paint, tissue paper, pasta, or recycled materials.
- 🌊 Learn About Ocean Habitats – Talk about where different sea animals live, what they eat, and how they survive in the ocean.
- 🐙 Dramatic Play – Set up the printable Seafood Grill or pretend to be marine biologists, scuba divers, or aquarium keepers while exploring sea life vocabulary.
- 🎵 Sing Ocean Songs – Enjoy sea-themed songs and fingerplays while practicing counting and learning the names of sea animals.
Related Resources
Looking for even more ways to explore the ocean? The Sea Life Activity Pack is filled with hands-on learning activities designed especially for preschool and kindergarten learners. Children can practice early math, literacy, fine motor, and problem-solving skills while enjoying colorful sea creatures and ocean-themed activities. It’s a fun way to extend your Sea Life Adventures at home or in the classroom! Click the image below to learn more about the Sea Life Activity Pack.
The ocean is full of amazing creatures, and there is always something new to discover beneath the waves! I hope these Sea Life Adventures have inspired your little learners to explore through art, science, math, literacy, dramatic play, and plenty of hands-on fun.
Whether they’re fishing for sea creatures, creating colorful ocean art, experimenting with water, or imagining a sea animal of their very own, each activity offers another opportunity to learn through play and discovery.
So grab your favorite sea life activities, dive in, and enjoy exploring the wonderful world beneath the waves together! 🌊🐠
Keep the Learning Going!
Ready for more hands-on learning fun? Join the FREE Lillian’s Handmade Freebie Vault for access to even more printables and activities created for little learners. Then, be sure to save this Sea Life Adventures post to Pinterest so you can come back whenever you’re ready to dive into another activity! 🌊🐠
