Last Updated on May 6, 2026 by Masha Eretnova
If your little one loves dolphins, ocean animals, or anything to do with the sea, this free ocean habitat activity for kids is going to be a huge hit!
My Dolphin Color by Number printable is a fun, no-prep worksheet that teaches kids about ocean habitats while building number recognition and fine motor skills — all with just crayons and a printer.
What’s on the Page?
This adorable color by number scene features a leaping dolphin in its ocean habitat, complete with waves, coral, a palm tree, and a friendly starfish peeking out from the water.
The numbered color key uses 9 colors — blue, yellow, grey, green, brown, light blue, orange, pink, and tan — all easily found in a standard crayon set.
What Supplies Do You Need?
- A home or classroom printer
- White paper or cardstock (cardstock recommended for display)
- A standard box of crayons (24-pack covers all the colors)
That’s all! Print, grab crayons, and you’re ready to go.
How to Use This Ocean Habitat Activity
Step 1: Download and print. Sign up below to grab the free PDF and print as many copies as you need.
Step 2: Check the color key. Look at the crayon key at the bottom of the page together and lay out the colors you’ll need.
Step 3: Color by number! Match each number in the scene to the correct color and watch the ocean come to life.
Step 4: Talk about it. Ask your child: “Why do you think dolphins live in the ocean?” or “What else lives under the sea?” A simple conversation turns this into a rich science moment.
Step 5: Display it!
What Kids Learn
Ocean habitats are a core early science topic, and this printable makes the learning hands-on and visual. Through this activity, kids explore the idea that dolphins are marine mammals that live in saltwater environments, that coral reefs are full of colorful sea life, and that oceans are one of the world’s most important ecosystems. Alongside the science, they’re also reinforcing number recognition and building the fine motor control that supports early writing skills.
Want More Habitat Printables?
This dolphin worksheet is just one page from our full Habitats Color by Number Bundle — a free 7-page printable set featuring animals from around the world, including a giraffe on the African savanna, a polar bear in the Arctic, a camel in the desert, a monkey in the rainforest, a zebra on the grasslands, and farm animals on the farm. It’s a fantastic set for a habitats unit, early finisher activities, or just some creative fun at home.
Masha Eretnova, born in 1991, is a Buenos Aires-based certified teacher, artist, and member of the Professional Artist Association 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.