Sea Otter Craft Instruction

July 2, 2026

Make a Sea Otter Craft and Build a Balanced Ocean Ecosystem

Sea otters are more than adorable floating fluffballs. They are ecosystem helpers! In this month’s edZOOcation activity, kids build a hanging ocean mobile that shows how sea otters, sea urchins, and kelp forests are connected.

Get the Instructions

Ready to make your sea otter ecosystem mobile? Choose the version that matches your child’s age group.

Zookeeper (Ages 3–5):
Kids color wooden ocean pieces and build a simple sea otter ecosystem mobile.
[Download Zookeeper Instructions] -> Insert ZK Sea Otter Ecosystem Balance Mobile PDF link

Zoologist & Conservationist (Ages 6–12):
Kids create a beaded sea otter, then add it to an ecosystem mobile with kelp and sea urchins.
[Download Zoologist / Conservationist Instructions] -> [Insert ZOCS Sea Otter Bead Craft + Ecosystem Mobile PDF link]

Watch the activity video here:
https://www.youtube.com/@edzoocation_box

What Kids Will Make

Your child will build an ocean ecosystem mobile that shows how sea otters help keep kelp forests healthy.

Younger explorers will color and hang wooden sea otter, kelp, and sea urchin pieces. Older explorers will first make a flat beaded sea otter using pony beads and elastic thread, then add it to their mobile.

As they slide the pieces along the dowel to balance the mobile, they'll discover how changing one part of an ecosystem affects everything else.

Zookeeper Ages 3–5: Wooden Sea Otter Mobile

This version is designed for younger explorers who are ready to color, build, and balance their own ocean ecosystem.

What’s in the Kit

1 wooden dowel
1 long hanging loop
3 short twine pieces
3 metal clips
1 sea otter wood piece
1 sea urchin wood piece
1 kelp wood piece
2 small rubber bands

How to Build It

Start by coloring the wooden sea otter, sea urchin, and kelp pieces. Let the pieces dry completely before assembling your mobile.

Next, attach one metal clip to each wooden piece. Loop one short twine piece through each clip and tie the ends securely.

Slide the long hanging loop through the center of the dowel and tie or pull it through itself to secure. This is how your mobile will hang.

Slip the wooden sea otter’s string over the center hanger. Place the kelp on one side of the dowel and the sea urchin on the other. Add a small rubber band to each end of the dowel to help keep the pieces from sliding off.

Hang your mobile, then slide the strands left or right until the dowel balances.

Zoologist Ages 6–8 and Conservationist Ages 9–12: Beaded Sea Otter Mobile

This version adds an extra crafting challenge. Kids will create a beaded sea otter first, then use it as the center piece in their ecosystem mobile.

What’s in the Kit

The bead craft includes:

Pony beads
Elastic thread
Scissors
Tape, not included

The ecosystem mobile includes:

1 wooden dowel
1 long twine piece
4 short twine pieces
Completed beaded sea otter
4 metal clips
2 sea urchin wood pieces
1 kelp wood piece
2 small rubber bands

How to Build It

Start by finding the middle of the elastic thread and tying a knot at the top so you have two long sides to work with. Tape the knot to a table to keep your project steady.

Follow the sea otter pattern one row at a time, starting at the head. Thread the beads across each row using one side of the string, then bring the other string back through the same beads from the opposite direction. This creates the flat, woven look of your beaded sea otter.

For the ears, complete the row with the two black eye beads, then add one brown bead to each string. Rethread each string through the same row and continue the pattern normally.

Once all beads are threaded, tie off the string securely. Add the keychain clip to the top loop of the otter.

To build the mobile, attach clips to the wooden pieces and the beaded otter. Loop one short twine piece through each clip and tie the ends securely.

Slide the long hanging loop through the center of the dowel and tie or pull it through itself to secure. Slip the beaded sea otter’s string over the center hanger. Place the kelp on one side of the dowel and the sea urchins on the other. Add a small rubber band to each end of the dowel.

Hang your mobile, then slide the strands left or right until the dowel balances.

What’s Happening?

Sea otters eat sea urchins. Sea urchins eat kelp. When sea otters are present, they help keep urchins under control. When otters are removed, urchins can take over and eat too much kelp.

That means your mobile is not just a craft. It is a model of a real ocean ecosystem.

Ask your child:

How did moving the pieces help you understand how everything in an ecosystem is connected?