Cuttlefish

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Introduction1

Dictionary

cuttlefish : any of various marine cephalopod mollusks (order Sepioidea, especially genus Sepia) having eight short arms and two usually longer tentacles and differing from the related squid in having a calcified internal shell — Webster

OneLook, Free Dictionary, Wiktionary

Encyclopedia

Cuttlefish or cuttles are marine molluscs of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, and nautiluses. Cuttlefish have a unique internal shell, the cuttlebone. Cuttlefish also have large, W-shaped pupils, eight arms, and two tentacles furnished with denticulated suckers, with which they secure their prey. They generally range in size from 15 to 25 cm (6 to 10 in), with the largest species, Sepia apama, reaching 50 cm (20 in) in mantle length and over 10.5 kg (23 lb) in mass. — Wikipedia

Encyclopædia Britannica

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Inspiration

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Innovation

Search

WolframAlpha

Science

You’re Not Hallucinating. That’s Just Squid Skin (Josh Cassidy, KQED Science)

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Preservation

Library

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

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Participation

Education

Octopus and Squid (Biology4Kids)

Course

OER Commons: Open Educational Resources

News

Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

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Expression

Fun

Scientists give cuttlefish 3D glasses and shrimp films for vision study (Ian Sample, The Guardian)
Cuttlefish use stereopsis to strike at prey (R. C. Feord, et al., Science Advances)

Poem

OEDILF: The Omnificent English Dictionary In Limerick Form

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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.

  • Cuttlefish camouflage may be more complex than...
    on May 31, 2022 at 2:53 pm

    A new study published in Current Biology suggests that the European cuttlefish (sepia officinalis) may combine, as necessary, two distinct neural systems that process specific visual features from its local environment and visual cues relating to its overall background environment to create the body patterns it uses to camouflage itself on the sea floor. This is in contrast to previous research suggesting that the cognitive (brain) processes involved are much simpler, in that the cuttlefish […]

  • Microplastics permeate seafood across southern...
    on April 18, 2022 at 12:47 pm

    Plastic rubbish is everywhere and now broken-down microplastics have been found in variable concentrations in blue mussels and water within the intertidal zone at some of southern Australia's most popular and more remote beaches.

  • Squid recorded color-matching a substrate for the...
    on April 5, 2022 at 2:38 pm

    While octopus and cuttlefish are famous for their use of camouflage to match the color of the substrate, squid have never been reported displaying this ability. Now, in a study published in Scientific Reports, scientists from the Physics and Biology Unit at the Okinawa Institute of Science and Technology Graduate University (OIST) have shown that squid can and will camouflage to match a substrate as a way of avoiding predators. This work opens up research avenues on how squid see and perceive […]

  • The hidden world of octopus cities and culture...
    on April 5, 2022 at 2:25 pm

    A recently proposed aquaculture octopus farm in the Canary Islands would raise 3,000 tons of octopus a year, which means almost 275,000 individual octopuses will be killed annually.

  • Octopus farms raise huge animal welfare concerns...
    on March 24, 2022 at 2:10 pm

    When you imagine an octopus's world, you might well see a curious creature in a complex undersea environment.

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial

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

Life Cell, Gene, Tree of Life
Microorganism
Plant Flower, Tree
Animal
Invertebrate Cuttlefish, 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

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Notes

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