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Exciting Under the Sea Octopus STEM Activities for Kids!

We love our octopus activities, and today, we’re focusing on an ocean favorite- the octopus! With these octopus STEM activities for kids you’ll learn everything there is to know about an octopus and have a blast at the same time!

The hands-on octopus STEM experiments can be used with kids in elementary school or middle school and can really help expand a child’s knowledge of octopuses that they learned from a book.

Over 11 exciting octopus STEM activities that any octopus-loving kiddo will adore! Hands on, simple activities using household supplies.

Hands-on projects are always remembered more than reading and worksheets!

Hands-on Octopus STEM Activities that Will Make a Splash!

Before we get to the hands-on octopus STEM activities, check out these supplemental materials that will complete your STEM lessons.

Octopus Shirts for Teachers

Check out these super fun octopus shirts you can wear during your octopus lessons!

octopi shirt
octopus teacher shirt ocean of possibilities
octopus shirt
octopus book shirt
cute octopus shirt
valentine octopus shirt
i wish i was an octopus shirt
cephalopods shirt
Click on each image to order your octopus teacher shirt!

Octopus Info for Kids

Here are some fun octopus facts to share with your students while they make their LEGO octopus designs!

Octopuses don’t have bones

Octopuses are invertebrates, which means they have no bones. Their boneless bodies enable them to squeeze into tiny crevices and spaces where predators can’t reach.

An octopus has three hearts

Two of these hearts, known as branchial hearts, pump blood to the gills where it gets oxygenated. The third heart, the systemic heart, pumps the oxygenated blood to the rest of the body. When an octopus swims, the systemic heart stops beating, which explains why octopuses prefer to crawl rather than swim, using swimming only as a means to escape predators.

STEM extension worksheets

Octopuses have blue blood

To survive in deep water, octopuses evolved a copper-based blood rather than iron-based blood like humans have, which turns its blood blue.

An octopus is a disguise genius

Octopuses can change the color and texture of their skin to match their environment in just seconds, making it hard for predators to find them.

An octopus has 9 brains: An octopus has a central brain and also additional small brains in each of its eight arms. These “arm brains” allow the octopus to process information and control movements in its arms independently, giving it a remarkable ability to multitask.

Octopuses are smart

Octopuses are widely regarded as one of the most intelligent non-human species. They have both short- and long-term memory capabilities, and they can learn from both observation and experience.

Octopuses have been observed opening jars to get to food inside, navigating mazes, and using tools to their advantage.

In aquarium settings, octopuses have even been known to unscrew lids, dismantle equipment, and find clever ways to escape their enclosures, demonstrating complex cognitive behaviors such as foresight and planning.

Most octopuses have venom

All octopuses, except one species (the Cirroteuthidae), have venom that they use to paralyze their prey.

Octopus Books for the Classroom

Here are some of our favorite non-fiction octopus books for kids to learn more fun facts about octopuses!

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Click on each book cover to learn more and order for your students!

Octopuses lay thousands of eggs

The female octopus lays up to 400,000 eggs. She guards and cares for them until they hatch, often without eating during this period.

Octopuses are strong swimmers

Octopuses can jet-propel themselves by expelling water from their bodies, reaching speeds of up to 25 miles per hour.

Octopuses have short lives

Depending on the species, octopuses can live from as little as six months to as long as a few years. The Giant Pacific Octopus, one of the longest-living species, can live up to five years.

An octopus has excellent vision

Despite living in the deep ocean, octopuses have good eyesight and can detect polarized light, which enhances their perception of contrast and improves their ability to detect prey and predators.

Octopus STEM Kits

These octopus STEM kits teach kids how different parts of an octopus works and offer another fun hands-on octopus STEM activity for kids to learn about the amazing octopus!

clixo octopus
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Click on each image to learn more about the octopus STEM kit and order it for your students.

If you need even more extensions for your octopus STEM activities, check out these octopus lesson plans!

How long does a octopus live?

The lifespan of an octopus can vary greatly depending on the species. Most species of octopuses live for only 1-2 years.

However, larger species like the Giant Pacific Octopus can live for up to 3-5 years under suitable conditions.

13+ Astonishing Octopus STEM Activities for Kids

Check out the list below of our favorite octopus STEM activity ideas!

You’ll find octopus activities for science, octopus technology activities, octopus engineering activities, and octopus math worksheets!

Check out the list below of our favorite octopus STEM activity ideas! You'll find octopus activities for science, octopus technology activities, octopus engineering activities, and octopus math worksheets!

Octopus Science Experiments

These octopus science experiments show kids how an octopus lives and looks!

In this octopus science experiment, you’ll learn why an octopus doesn’t have bones and what would happen if it did!

Learn about the octopus life cycle and how it moves from one stage of life to another in this creative science activity.

You can learn about crystals and the ocean with this octopus crystals science activity!

Octopus Technology Activities

The technology that octopuses use is fascinating! Here are some octopus technology projects to try.

How Cephalopods communicate is a fascinating look at the technology that ocean creatures use!

This octopus camouflage activity goes really in depth on how an octopus can hide and turn so many different patterns and colors!

Rocktopus coding is a fun way to learn coding with the help of a fun octopus.

Learn all about how an octopus shape can be useful in technology with this list of STEM projects robotic octopus activities!

STEM extension worksheets

Octopus Engineering Activities

When it comes to octopus engineering, their intelligence is unmatched! Try these octopus engineering activities to find out how smart they really are.

Build your own version of octopus hands in this unique octopus STEM activity and challenge students to see if they can manage multiple arms at once!

This octopus activity for kids can be as simple or as complicated as you like when you build a LEGO octopus. Add in other STEM elements to complete your octopus engineering activity!

Make this Octopus robot claw and learn how an octopus uses their arms.

Learning How an octopus moves is super fascinating and a lot of fun!

Octopus Math Activities

Math isn’t boring when an octopus is involved.

This fun ordinal octopus activity teaches younger kids all about ordinal numbers!

In this octopus math activity, learn how an octopus is smart enough to run basic probability calculations and see if you can predict the correct result as well as an octopus.

Octopus Lesson Resources

Use these octopus classroom supplies and products to go along with your octopus STEM lessons!

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clixo octopus
diy paper octopus origami puzzle
octopus fidgets
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Click on each image to purchase these octopus supplies for your classroom!

If you need more inspiration for your octopus lessons, check out these octopus lesson plans!

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