How many hearts does an octopus have?

Three: two pump blood through the gills and one pumps it around the body.

Why is octopus blood blue?

Because it uses copper instead of iron to carry oxygen.

No. The only hard part is the beak, so they can squeeze through tiny gaps.

Ocean facts for kids

Octopuses are real superheroes! Read these 10 true facts with your child. 🐙

1. An octopus has three heartsTwo hearts help it breathe. One heart moves blood around the body.
2. Its blood is blueIts blood has copper in it. Copper makes it blue.
3. It has nine “brains”One big brain in the head, and a small one in each arm. Each arm can think a little by itself!
4. It tastes with its suckersThe suckers on its arms can taste. Touch = taste!
5. It changes colour very fastIn less than 1 second, it can look like a rock, sand or coral.
6. It squirts ink to escapeIn danger? It makes a dark ink cloud and swims away. Whoosh!
7. It has no bonesIt is soft. It can squeeze through very small holes.
8. One heart stops when it swimsWhen it swims, one heart takes a break. So it gets tired fast and likes to crawl.
9. It decorates its homeIt puts shells and stones in front of its home, like a little garden.
10. It has arms, not tentaclesAn octopus has 8 arms and 0 tentacles.

🌊 Bonus: seahorse babies grow in the papa's tummy pouch!

A free picture book for ages 5–8. Tako helps a lost seahorse find her papa. A true fact on every page!