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common name applied to cephalopod mollusks that have 10 tentacles, or arms, 8 of which have muscular suction cups on their inner surface and 2 that are longer and can shoot out for grasping prey, and a reduced internal shell enbedded in the enveloping mantle. The body is short, broad, and flattened. Cuttlefish are carnivorous and excellent at capturing prey with their arms.

Although good swimmers, they are not as fast as the related squidssquid,
carnivorous marine cephalopod mollusk. The squid is one of the most highly developed invertebrates, well adapted to its active, predatory life. The characteristic molluscan shell is reduced to a horny plate shaped like a quill pen and buried under the mantle.
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, but like the squids cuttlefish have lateral fins used as stabilizers and for steering and propulsion. They swim by jet propulsion, forcibly expelling water through a siphon. During the day they lie hidden at the bottom of the ocean; at night they swim and hunt for food.

Except for the squid genus Loligo, cuttlefish have the best cephalopod eyes, which are highly complex. When disturbed, cuttlefish eject a cloud of dark brown ink from an ink sac for protection. The ink gland and ink sac are specializations of the rectal gland. The ink is composed mostly of melanin and has been used as the artist's pigment, sepia. All cuttlefish are dioecious, i.e., the sexes are separate.

The common, or common European, cuttlefish, Sepia officinalis, possesses an internal shell composed of lime, which is popularly called cuttlebone. Within the narrow spaces between the thin septa of the shell are fluid and gas (mostly nitrogen), which give the organism buoyancy. These cuttlefish are found in the Mediterranean and E Atlantic. The cuttlebone is used for pet birds as a source of lime salts. Sepia are able to undergo a complex of color changes ranging from pink to brown with varying stripes and spots, which they display when they are signaling or are disturbed; they also can change color and texture to camouflage themselves. The eggs, deposited singly and attached by a stalk to objects on the ocean bottom, are extremely large, up to .6 in. (15 mm) in diameter. Cuttlefish are classified in the phylum MolluscaMollusca
, taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period.
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, class Cephalopoda, order Sepiida.


(invertebrate zoology)
An Old World decapod mollusk of the genus Sepia; shells are used to manufacture dentifrices and cosmetics.


any cephalopod mollusc of the genus Sepia and related genera, which occur near the bottom of inshore waters and have a broad flattened body: order Decapoda (decapods)
References in periodicals archive ?
David Drewry of the REED NCFE partnership at Loughborough College added: "David has been demonstrating a fantastic mindset alongside utilising his skills and this has resulted in some excellent work at Cuttlefish.
For the octopus and cuttlefish, instantaneously changing their skin color and pattern to disappear into the environment is just part of their camouflage prowess.
Popularly known as the chameleons of the sea, cuttlefish change their colours and patterns wildly as they swim around, making for an underwater circus that snorkelers and divers won't want to miss, just 5 hours away from Adelaide city.
Although this experiment has been performed using cuttlefish, neither it nor any other assay has been used to measure learning and memory in E.
Observing MRG members standing discreetly in a line along the edge of the pool did not alarm the cuttlefish, which swam quite closely by, to and fro, each pass happily exercising the cameras of all present.
ABSTRACT The Correct cuttlefish Sepia pharaonis (Ehrenberg, 1831) is an abundant cephalopod in Persian Gulf and Oman Sea.
It takes the signature dishes of the restaurant, adapts them for home cooks, and pairs them with color photos by Anders Schonnemann, but is recommended for readers who like to tackle innovative ingredients and dishes, from a Cuttlefish Risotto with Charred Fennel to Hara Bhara Lamb with Smoky Eggplant and Mint Yogurt and Duck and Waffle with Mustard Maple Syrup.
Remove the onions from the heat and add the cubed cuttlefish to the pan.
Scientists at the Central Marine Fisheries Research Institute, Cochin, say the northern Arabian Sea is a key fisheries zone for India, having contributed over 850,000 tonnes a[euro]" mainly catfish, ribbon fish, Bombay duck, cuttlefish, squid, octopus and threadfin breams a[euro]" to India's marine catch during 2012.
Cuttlefish is the main delicacy of the city where ComOn is based and they have the motto of "What happens in the Cuttlefish Brotherhood stays in the Cuttlefish Brotherhood.
com/movie-news/exclusive-spoilery-details-on-jurassic-world-the-park-the-dinos-more) JoBlo state that the chief villain / dinosaur will be a hybrid of T-Rex, snake, cuttlefish and raptor.
Specialising in British seafood, caught largely around the Cornish coast, expect the likes of lobster risotto with orange and basil, turbot with crispy oysters, cabbage and bacon, and gurnard and cuttlefish with red pepper and ink sauce.