![]() This gives them the unique ability to fit through any opening that their beak can fit through – meaning that even an octopus weighing over 500 pounds can squeeze through openings the size of a quarter. Unlike the other two, octopus have no internal shell or bone. It helps cuttlefish with their buoyancy, and is one reason cuttlefish move more slowly than squid or octopus. Cuttlebone isn’t like human bone while it’s stiff, it’s also brittle and porous, making it lightweight, kind of like a sturdy Styrofoam. ![]() While it provides some structural support for the squid, it’s mostly an evolutionary leftover.Ĭuttlefish are the most structured of the three, having an interior cuttlebone made of aragonite. Like we talked about in Squid Facts Episode 3, squid have a gladius or quill inside their body. One of the biggest differences among these three species is their shell. Squid are longer and more cylindrical cuttlefish are smaller and sort of spoon-shaped octopus have very round heads and larger tentacles. They are all carnivores, have beaks that are sort of like a parrot, and they all will use ink to as a defense mechanism.Īt first glance, you can start to tell these three apart by their general shape. They all have tentacles attached to their head, not their body. They are all undersea animals in the mollusk family. It’s easy to see why they’re sometimes confused. Today, we’re going to talk about three similar, but different cephalopods: squid, cuttlefish, and octopus. Welcome to this episode of The Town Dock’s Squid Facts.
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