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Giant Pacific Otopus (National Geographic)



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

Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human


These are organized by a classification scheme developed exclusively for Cosma. More…



The Octopus News Magazine Online


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

octopuses or octopi (Merriam-Webster)
OneLook, Free Dictionary, Wiktionary, Urban Dictionary


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


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

Encyclopædia Britannica


Octopus Facts (Alina Bradford, Live Science)
Ten Curious Facts About Octopuses (Rachel Nuwer, Smithsonian.com)
Octopus Facts (Alina Bradford, Live Science)




On Ecstasy, Octopuses Reached Out for a Hug (JoAnna Klein, New York Times)



Fossil Octopuses (The Octopus News Magazine Online)


WorldCat, Library of Congress, UPenn Online Books, Open Library



Why the octopus brain is so extraordinary (Cláudio L. Guerra, TED-Ed)

Octopus and Squid (Biology4Kids)


OER Commons: Open Educational Resources


The Octopus News Magazine Online, Phys.org, NPR Archives









A Brief History Of Octopi Taking Over The World (Kelsey D. Atherton, Popular Science)
Octopus Jokes (Worst Jokes Ever)


OEDILF: The Omnificent English Dictionary In Limerick Form


Song Lyrics


Giant Squid & Octopus: History and Evidence (Anomalies)
4 Cephalopods from Myth and Folklore: Celebrating World Octopus (Kattyayani’s Blog)



The Octopus News Magazine Online TONMO.com: Your Cephalopod Information Center (Octopus, Squid, Cuttlefish, Nautilus, Fossils)

  • Starting my tank build
    by invalid@example.com (josephw) on February 22, 2019 at 4:32 am

    So I went to petsmart an picked up a 75 gallon top fin tank lid light combo after work along with a 20 gallon for the sump an a little 5 gallon critter cage for crabs an whatever I might try to keep for live food. The tank came with a decent hinged glass lid I might be able to make use of but what I thought was a plugin for the light bar turned out to be just a little blue led light. Not sure what that's for but ill have to contact petsmart or the manufacturer to get one. So far I'm down $300 […]

  • Squid could provide an eco-friendly alternative...
    by invalid@example.com (octobot) on February 22, 2019 at 12:05 am

    From NewScientist / Eureka Alert: The remarkable properties of a recently-discovered squid protein could revolutionize materials in a way that would be unattainable with conventional plastic. Originating in the ringed teeth of a squid's predatory arms, this protein can be processed into fibers and films with applications ranging from health-monitoring 'smart' clothes to self-healing recyclable fabrics that reduce microplastic pollution. Materials made from this protein are eco-friendly and […]

  • Suspected mercatoris (and if so..)
    by invalid@example.com (Stormlantern) on February 21, 2019 at 5:59 pm

    Hello everyone! Received the long awaited call from the LFS and picked up a little octopus that seems healthy. From what I can tell, he(?) looks most like O. Mercatoris, but I wasn't sure. Still waiting to hear from the guy about where they ordered from. Any thoughts? M/F, Species, etc. Also if it is a mercatoris, I thought they preferred a smaller tank, and I have a 90 gallon with about 70 lbs of LR. I did see him(?) yesterday around 9pm by shining a red light for about 20 minutes with all […]

  • Leaving lurker behind
    by invalid@example.com (Stormlantern) on February 21, 2019 at 5:46 pm

    Hello everyone! My name's Ian, I've only been on the forum for a little while but as I'm hoping to get an octo next week I thought now might be a good time to speak up. I've been keeping fish for almost 9 months now, and I've been tinkering with my saltwater tank for about 3 months. Its a 90 gal hex tank, and I put in a refugium, about 40 gal, on the floor next to it for more water volume and equipment. Current occupants are: a tiger brittle star, sand sifting sea star, 3 peppermint shrimp […]

  • Refugiam prep, tank make over, and a new chapter!
    by invalid@example.com (KD5054) on February 21, 2019 at 5:03 am

    I recently acquired a refugium to hang onto the back of my tank. I've been told this is a great way to help balance and keep your tank clean. This is a work in progress as I found out the store I got it from forgot to send me home with a pump to draw water and and through it. This refugiam also has a built in skimmer to it. I was also suggested that I might be able to keep a frogfish in the refugiam as a side pet. Looking more into that. I've taken time to add a few more small feather […]

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.

  • In an Australian first, the ACT may legally...
    on February 14, 2019 at 2:20 pm

    Have you ever wondered what's going through your dog's mind when you say the word "walk"? And does your pup seem to show guilt when you ask them sternly "what have you done?" Their tail might drop between their legs, their ears droop down, and their eyes turn away. […]

  • Envisioned 'octopus farms' would have...
    on January 24, 2019 at 9:35 pm

    Commercial octopus farming, currently in developmental stages on multiple continents, would have a negative ripple effect on sustainability and animal welfare, concludes a team of researchers in a newly published analysis. […]

  • Coastal seas around New Zealand are heading into...
    on January 22, 2019 at 2:00 pm

    As New Zealanders are enjoying their days at the beach, unusually warm ocean temperatures look to be a harbinger of another marine heatwave. […]

  • Armed with affection, octogenarian is an 'octopus...
    on January 22, 2019 at 10:56 am

    Wilson Menashi palmed a squid in his left hand and extended his arm into an aquarium tank, watching as a giant Pacific octopus stretched out arms to greet him like a friend. […]

  • A little squid sheds light on evolution with...
    on January 7, 2019 at 9:09 pm

    Bacteria, which are vital for the health of all animals, also played a major role in the evolution of animals and their tissues. In an effort to understand just how animals co-evolved with bacteria over time, researchers have turned to the Hawaiian bobtail squid, Euprymna scolopes. […]