Cephalopods Octopus facts
While investigating facts about Cephalopods Octopuses And Cuttlefish For The Home Aquarium and Cephalopods Octopus Cuttlefish Squid, I found out little known, but curios details like:
Due to a researcher’s offhand comment about octopus DNA seeming “alien”, many news outlets mistakenly began reporting that cephalopods had actually come from outer space.
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Due to the octopus's intelligence, they and all other cephalopods are the only invertebrates that need to be anesthesised before surgery.
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Cephalopods (Octopus) have been known to climb out of their aquaria, maneuver a distance of the lab floor, enter another aquarium to feed on the crabs, and then return to their own aquarium.
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The vampire squid is not a squid or an octopus. It is the only living member of Vampyromorpha, an ancient cephalopod order which was a precursor to squids and octopuses
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Octopuses usually have 8 arms and 0 tentacles because cephalopod "arms" have suckers along most of their length while tentacles only have suckers near the ends.
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Cephalopods (octopus and squid) only live up to five years. Dying shortly after mating and only mate once in their lifetime. This means large varieties such as the colossal squid have to grow incredibly fast to reach full size in five years.
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The ancestors of modern, squishy cephalopods like the octopus and the squid all had shells. In ancient times, their shell was their greatest asset but it eventually proved to be their biggest weakness.
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Cephalopods, i.e. the octopus, squid and cuttlefish, have three hearts apiece.
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In many countries, including Australia, Invertebrates do not fall under animal protection laws and ethics, with the occasional exception of Cephalopods: Octopuses, Squids and Cuttlefish.
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Cephalopod (squid, octopus, cuttlefish...) esophaguses (throats) run directly through their brains.
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Octopuses don't have tentacles. They have 8 'arms'. There are clear difference between arms and tentacles which can be found on other cephalopods.
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ONLY humans and octopuses (and other cephalopods) have a camera eye, with a lens that focuses an image on a retina. We’ve got it, they’ve got it, and that’s it!
Blacknose shark is quick swimmer and voracious predator that feeds on fish (pinfish, porcupine fish, box fish, puffer fish and anchovies) and cephalopods (octopus).
Frilled sharks (Living Fossils) have 25 rows that maintain 300 triangular shaped needle sharp teeth. One that was recently dissected revealed a diet of squid, cuttlefish, octopus and other sharks. It is believed that their diet is more than 60% cephalopods (marine mollusks). - source
Cephalopods like Octopus and Squid have beaks for killing and consuming their prey
