Octopus Facts



  • Octopuses have two large eyes, similar to humans, and a beak-like mouth.
  • When in danger an octopus may send out a cloud of inky black fluid. Sometimes the ink cloud is the same shape as the octopus and may fool a predator into chasing the cloud.
  • Most of the hundreds of species of octopus live on the beds of shallow seas around the world. Octopuses are quite intelligent creatures.
  • Octopuses and squid belong to a family of molluscs called cephalopods.
  • Octopuses are sea creatures with a round, soft, boneless body, three hearts and eight long arms called tentacles.
  • An octopus’s tentacles are covered with suckers.
  • A giant squid is rarely seen and .s usually partly-decomposed when caught. For this reason it is the subject of many myths. Its eyes, however, are truly massive, the biggest of any animal.
  • Some octopuses can change color dramatically to startle a predator or blend in with its background.
  • The smallest octopus is just 2.5 cm across. The biggest measures 6 m from tentacle tip to tentacle tip.
  • A squid has eight arms and two tentacles and swims by forcing a jet of water out of its body.
  • Giant squid in the Pacific can grow to 18 m or more long.
  • The 30 cm-long blue-ringed octopus’s poison is so deadly that it kills more people than sharks.