Last Updated on May 25, 2026 by Masha Eretnova
If it is summertime or your child is obsessed with all marine creatures, you were probably googling for new, fresh, not boring ocean activities and crafts. I got you.
These two Under the Sea Adventure Activity Mats are jam-packed with puzzles, drawing challenges, and brain teasers — all wrapped up in the cutest ocean-themed illustrations.
Best of all? You can grab the free printable PDF in this post!
Whether you’re planning summer crafts for a classroom party, a rainy-day activity at home, or a themed preschool unit, these mats have everything you need.
What Are Under the Sea Activity Mats?
These ocean crafts printables are oversized activity sheets — think placemat-sized — that children can work through independently or with a grown-up.
Each mat packs in multiple activities so kids stay engaged from start to finish. The set includes 4 pages total:
- two activity mats full of things to do,
- plus two answer key pages so parents and teachers can check the work (or sneakily solve the word search themselves — no judgement).
The black-and-white design means they print beautifully on any standard home or school printer, and kids can colour them in as they go for an extra layer of creative fun.
What’s Inside the Printable Set?
Mat 1 — The Explorer Mat
This mat is perfect for kids who love a challenge. Activities include:
- Help Baby Fish Find Mama Fish — A satisfying hexagonal labyrinth maze where kids guide the baby fish through a winding coral reef to reach mama fish. Great for developing focus and problem-solving skills.
- Decorate Your Own Fish — A large blank fish outline just waiting to be turned into the most colourful, most creative creature under the sea. Kids choose the patterns, colours, and personality!
- Word Search — Find ocean-themed words including CRAB, LOBSTER, SEAHORSE, SEAWEED, CORAL, CLAM, TURTLE, FISH, SQUID, and ANEMONE hidden in the grid.
- Match the Animals With Its Home — A fun matching activity where children draw lines connecting each ocean animal to its correct habitat or shell.
- Tic-Tac-Toe Grid — Two blank tic-tac-toe boards for a quick two-player game between activities.
- True or False Question — “Can octopuses change colour?” — a conversation-starting fact question that doubles as a sneaky science lesson.
Mat 2 — The Creative Mat
This mat leans into art and language play, and is an absolute hit with preschool and early elementary kids:
- Connect the Dots — Number dots from 1 to 34 that reveal a surprise ocean creature when joined up. Great for number recognition and fine motor skills.
- Name the Sea Creatures — Three illustrated sea animals (shrimp, seahorse, turtle, jellyfish) with blank answer boxes to write in the names.
- Fill in the Missing Letters — Eight ocean vocabulary words with letters removed, including BARNACLE, SEASHELL, CURRENT, PLANKTON, TIDES, REEF, SUBMARINE, and ALGAE. Perfect for spelling practice and building ocean science vocabulary.
- Draw the Other Half — Half an octopus is shown; kids must complete the symmetrical drawing on the blank side. This is a brilliant exercise for spatial awareness and fine motor development.
- How to Draw a Shark — A seven-step drawing tutorial that walks kids through drawing an adorable cartoon shark from scratch. Even the most reluctant artists will love this one.
- Word Scramble — Ten scrambled ocean words (ARCOL = CORAL, LODPHNI = DOLPHIN, and more) to unscramble and write in the answer line.
Supplies You’ll Need
One of the best things about these ocean crafts printables is how simple the supply list is. Here’s everything you need:
- Printer — Any standard inkjet or laser printer works. Print in black and white to save ink.
- Paper — Regular A4 or US Letter paper works perfectly. For a sturdier mat, print on card stock (80–110 gsm).
- Pencils or Crayons — Kids will need something to write their answers, and crayons or coloured pencils to decorate the fish and finished drawings.
- Black marker or thin-tipped pen (optional) — Great for the connect-the-dots and drawing activities if kids want bolder lines.
- Scissors (optional) — If you want to laminate or trim the mats to size.
- Laminator (optional, but highly recommended for classroom use) — Laminate the mats and use dry-erase markers so they can be used again and again. A game-changer for teachers!
That’s it — no glue, no glitter, no mess. Just print and play.
How to Use the Activity Mats
There is no right or wrong in terms of where to start and which page fill first. Complete freedom.
For Preschool & Kindergarten (Ages 3–5)
Focus on the more visual and hands-on activities: the connect-the-dots, decorate your own fish, draw the other half, and the matching activity.
Read the word scramble clues aloud and let little ones guess the answers verbally.
The “How to Draw a Shark” tutorial is a huge hit at this age — go slowly step by step and celebrate every wobbly fin!
For Early Elementary (Ages 6–8)
Children at this level can work through most of the mat independently.
The word search, missing letters, and word scramble are great challenges for developing readers.
For the Classroom
Print a class set before a themed ocean unit, ocean animal week, or as a fun end-of-term activity. The mats work brilliantly as:
- A morning warm-up or early finisher activity
- A substitute teacher’s go-to pack
- A take-home homework alternative
- A rainy-day indoor recess activity
Laminate a set and keep them in a tub with dry-erase markers for a reusable literacy and fine motor centre.
For Home
These are ideal for summer crafts at home — pack them in your bag for restaurants, long car trips, or school holidays.
Print one a week as a quiet-time activity, or set up a little “ocean explorer station” with the mats, crayons, and a few ocean books from the library.
Tips for Getting the Best Print
- Print at 100% scale — Don’t select “fit to page” as this can shrink the activities.
- Use draft or economy mode — Since the mats are black and white, economy print mode saves ink without affecting quality.
- Cardstock tip — If your printer can handle 90gsm card, it makes the mats feel much more substantial and the drawing activities work much better.
- Answer keys — The set includes two full answer key pages with solutions marked in red. These are handy for teachers checking work or for kids who get truly stuck on the maze!
Why Kids Love These Ocean Activity Mats
There’s something magical about a sheet of paper that holds eight different things to do. Kids don’t feel like they’re doing “work” — they’re on an adventure.
The ocean theme is endlessly appealing: sharks, jellyfish, turtles, clownfish, crabs, and starfish all appear across the mats in adorable cartoon form, making every activity feel like a discovery.
The variety is the real secret.
By mixing puzzles, art, writing, and drawing on a single page, kids naturally stay engaged longer.
When they finish the maze, there’s the word search. After the word search, there’s the drawing tutorial.
Before they know it, the whole mat is complete — and they’ve practised handwriting, spelling, symmetry, number sequencing, and creative thinking without a screen in sight.
Grab Your Free Printable PDF!
Ready to download your Under the Sea Adventure Activity Mats? The full set — both activity mats plus both answer key pages — is available as a free PDF. Just pop your email address in the box below and the download link will land straight in your inbox.
What you’ll get:
- Mat 1: Maze, fish decorating, word search, animal matching, tic-tac-toe & trivia
- Mat 2: Connect the dots, name the creatures, missing letters, symmetry drawing, shark drawing tutorial & word scramble
- Answer Key 1 & Answer Key 2 with all solutions
These free printable activity mats are perfect for preschool, classroom use, and home — and they make a wonderful addition to any ocean crafts or summer crafts unit. Download yours today and let the underwater adventure begin!
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Masha Eretnova, born in 1991, is a Chiang Mai-based certified teacher, artist, and blogger with 20+ years of personal painting journey.
She started painting and drawing very early and is now an international abstract artist and educator passionate about acrylic painting, gouache, and crafts.
Her works are part of international exhibitions and contests, including ArtlyMix (Brazil), Al-Tiba 9 (Spain), Exhibizone (Canada), Italy, and many more.
Besides her artistic pursuits, Masha holds a post-grad diploma in Teaching Film Photography and 2 music school diplomas: piano and opera singing.