Sea Creatures

The Most Interesting Facts About Cephalopod Intelligence

List Rules
Vote up the coolest things you didn't already know about cephalopod (that means octopuses and stuff) intelligence.

Cephalopods are a group of invertebrates that includes squids, octopuses, and cuttlefish. Scientists are constantly learning new things about the intelligence of these animals. This list includes the most interesting things we know about cephalopod intelligence.

So how smart are cephalopods? Their intelligence is actually pretty difficult to assess since cephalopods display intelligence in ways that are very different from humans. But we'll give you the facts about the smartest cephalopods and let you decide how mind-blowing they are. Vote up the fact that you think is the coolest.
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  • 1
    57 VOTES

    They Can See with Their Skin

    Scientists believe that cephalopods are colorblind - at least when they are looking with their eyes. Researchers recently discovered that a cuttlefish's skin contains gene sequences that are usually only found in the retina, the part of the eye that takes in light. This may explain why cephalopods can change color to match their surroundings, even though their eyes probably cannot see color.
  • 2
    44 VOTES

    Most of Their Neurons Are in Their Arms

    About three-fifths of a cephalopod's neurons are not in its brain: they're in its arms and tentacles. One reason for this is that cephalopods change color using skin cells called chromatophores, and these cells are so complex that they need to be operated by several muscles, each of which is connected to a neural cell.
  • 3
    33 VOTES

    They Have an Impressive Camouflage Repertoire

    They Have an Impressive Camouflage Repertoire
    Video: YouTube
    Not only can cephalopods change color to blend in with a wide variety of backgrounds, but one species has also been observed changing its body shape to mimic other animals. The mimic octopus will disguise itself as various ocean creatures to protect itself from predators. There are at least 15 different species in the repertoire of this master of disguise.
  • 4
    41 VOTES

    They Have Personalities

    This claim is controversial, but two scientists believe they saw evidence of different personalities in octopuses. When different octopuses encountered the same threat or food stimulus, they reacted in different ways - one might flee, one might investigate or fight. These different responses, the researchers say, are evidence of different personalities.