Here are some brilliant octopus facts 🐙 — strange, clever, and slightly unsettling. Like many of the fun facts we bring you here on PubChat you’ll be wondering why you didn’t know it before.
- They have three hearts: Two of them pump blood to the gills, and one pumps blood to the rest of the body.
- Blue blood: Their blood is blue because it uses copper-based hemocyanin, not iron.
- Very intelligent: Octopuses can solve puzzles, open jars, escape tanks, and remember solutions.
- Nine brains (sort of): One central brain plus a mini-brain in each arm. Their arms are as a consequence capable of acting semi-independently.
- Master of disguise: They can change colour, texture, and shape in milliseconds to help camouflage themselves or communicate with others.
- Boneless escape artists: An octopus can squeeze through any gap larger than its beak.
- Short lives: Most species will only live for 1–2 years.
- Tool users: Some carry coconut shells or rocks to use as portable shelters.
- Ink defence: They squirt ink to confuse predators and make a quick escape.
- Poisonous bite: Many of the species of Octopus are venomous. The blue-ringed octopus can even be deadly to humans.
- Arms taste and feel: Their suckers can taste as well as grip.
- No tentacles: Octopuses have arms, not tentacles (tentacles have suckers only at the tips).
- Lonely creatures: They’re generally solitary and don’t like company.
- End-of-life parenting: Female octopuses stop eating while guarding their eggs and die shortly after they hatch.
Octopuses are often described as the closest thing to an alien intelligence on Earth.
