Octopus

Cosma / Communication / Knowledge / Realm / Terrestrial / Life / Animal / Invertebrate / Octopus
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Introduction1

Deep Marine Scenes (YouTube Channel)
Deep Marine Scenes (Facebook)

Dictionary

octopus : genus (Octopus) of cephalopod mollusks that have eight muscular arms equipped with two rows of suckers; broadly : any octopod excepting the paper nautilus — Merriam-Webster   See also   OneLook

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

Encyclopedia

Octopus is a soft-bodied, eight-armed mollusc of the order Octopoda. Around 300 species are recognized and the order is grouped within the class Cephalopoda with squids, cuttlefish and nautiloids. Like other cephalopods, the octopus is bilaterally symmetric with two eyes and a beak, with its mouth at the centre point of the arms (which are sometimes mistakenly called “tentacles”). The soft body can rapidly alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight arms behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviorally diverse of all invertebrates. — Wikipedia

Octopus (Encyclopædia Britannica)

Octopods (One Zoom)
Octopus (Catalogue of Life)
Octopus (WolframAlpha)

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Inspiration

Deep Sea Creatures (Leo Richards, Natural World Facts, YouTube Playlist)
Deep Sea Hub (Leo Richards, Natural World Facts, Official Website)

Talks about Octopus (TED: Ideas Worth Spreading)
Articles about Octopus (Big Think)

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Innovation

Science

Teuthology is the study of cephalopods such as octopus, squid, and cuttlefish. It is a branch of malacology, the study of molluscs, in marine zoology. — Wikipedia

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Preservation

Library

DDC: 594.56 Octopus (Library Thing)
Subject: Octopus (Library Thing)

Subject: Octopus (Open Library)

LCC: QL 430.3 Octopus (UPenn Online Books)
Subject: Octopus (UPenn Online Books)

LCC: QL 430.3 Octopus (Library of Congress)
Subject: Octopus (Library of Congress)

Subject: Octopus (WorldCat)

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Participation

Education

Octopus and Squid (Biology4Kids)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

Occupation

Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)
Zoologists and Wildlife Biologists (Occupational Outlook Handbook, U.S. Bureau of Labor Statistics)
Zoo Careers (SeaWorld Parks & Entertainment)

Organization

Zoological Association of America
Association of Zoos and Aquariums

News

Octopus (EurekaAlert, American Association for the Advancement of Science)
Octopus (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Octopus (JSTOR)
Octopus (Science Daily)
Octopus (Science News)
Octopus (Phys.org)
Octopus (NPR Archives)


More News …

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • This tiny blue octopus from the Galápagos could...
    on May 25, 2026 at 1:00 am

    The Galápagos Islands off the coast of Ecuador are home to more than a thousand plant and animal species found nowhere else on Earth—things like marine iguanas and giant tortoises. In a new paper in the journal Zootaxa, scientists have announced the discovery of the newest animal found in the Galápagos: a tiny blue octopus.

  • This single mother must learn quickly—or her...
    on May 18, 2026 at 2:20 pm

    Being a single mother of 20 is no joke, especially if the survival of a whole species depends on it. A queen bumblebee faces this very challenge when she lays her first eggs in the spring: She is utterly alone, with no worker bees to help.

  • A massive kraken-like octopus may have prowled...
    on May 17, 2026 at 12:00 pm

    The top predator prowling the seas during the age of the dinosaurs 100 million years ago may have been the octopus.

  • Long-overlooked gene for deglycosylating enzyme...
    on May 13, 2026 at 10:40 pm

    RIKEN researchers have determined the molecular structure of an enzyme that occurs in fish. This could shed light on molecular processes in a wide range of marine organisms. The work is published in the Journal of Biological Chemistry.

  • The G-value paradox: Why similar genes can lead...
    on May 11, 2026 at 3:37 pm

    Biologists have long puzzled over why organisms with similar numbers of protein-coding genes can differ so dramatically in nervous system complexity. New research points to a potential link between the expanding diversity of RNA-binding proteins, which shape how genetic instructions are processed, and greater brain sophistication.

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Animal
Invertebrate
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Vertebrate
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.