Octopus

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Giant Pacific Otopus (National Geographic)

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

General

Portal

The Octopus News Magazine Online

Dictionary

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)
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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

Encyclopædia Britannica

Introduction

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

Search

WolframAlpha

Science

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

Preservation

History

Fossil Octopuses (The Octopus News Magazine Online)

Library

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

Participation

Education

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

Octopus and Squid (Biology4Kids)

Course

OER Commons: Open Educational Resources

News

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

Book

ISBNdb

Government

Document

USA.gov

Expression

Fun

Humor

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

Poem

OEDILF: The Omnificent English Dictionary In Limerick Form

Music

Song Lyrics

Folklore

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

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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.

  • Female octopuses observed throwing stuff at males...
    on August 30, 2021 at 3:10 pm

    A team of researchers from Australia, Canada and the U.S. has found that female octopuses sometimes throw silt at males who are attempting to mate with them. The group has written a paper describing their observations and has posted it on the bioRxiv preprint server.

  • Commentary: Send in the sea otters to help save...
    on August 11, 2021 at 3:59 pm

    Kelp forests are a crucial California marine ecosystem. From kelp's floating canopies to its "holdfast" roots, the giant seaweed—algae, actually—supports greater biodiversity and sequesters more carbon than a redwood grove, while also protecting our coastline from the full force of Pacific storms. Kelp forests shelter fin fish, shellfish, whales, seals, octopuses and sharks—more than 1,000 animal and plant species in all.

  • Examining the food chains controlling invasive...
    on July 21, 2021 at 2:32 pm

    A landmark scientific study involving marine biologists from Greece, Turkey, Cyprus, Libya, Italy, Tunisia, the UK, the US and Malta documenting instances where native Mediterranean species have preyed upon two highly invasive marine fish—the Pacific red lionfish and the silver-cheeked toadfish—has just been published. Prof. Alan Deidun, coordinator of the Spot the Alien Fish citizen science campaign and resident academic within the Department of Geosciences of the Faculty of Science, is a […]

  • Scientists explore seamounts in Phoenix Islands...
    on July 9, 2021 at 2:41 pm

    Marine scientists aboard Schmidt Ocean Institute's research vessel Falkor have identified likely new marine species and deep sea organisms on nine seamounts that were explored for the first time in the remote Phoenix Islands Archipelago. In a 34-day expedition that ended today, scientists also conducted high-resolution seafloor mapping of more than 30,000 square kilometers and video exploration of five additional seamounts.

  • Suckers for learning: why octopuses are...
    on July 7, 2021 at 1:10 pm

    Our last common ancestor with the octopus existed more than 500 million years ago. So why is it that they seem to show such peculiar similarities with humans, while at the same time appearing so alien? Perhaps because despite their tentacles covered with suckers and their lack of bones, their eyes, brains and even their curiosity remind us our own thirst for knowledge.