This article needs additional or more specific images. Please help out by adding images to it so that it can be better illustrated.(December 2022)
Ventral view of the viscera of Chtenopteryx sicula, showing the specific location of the ink sac
Cephalopod ink is a dark-coloured or luminous ink released into water by most species of cephalopod, usually as an escape mechanism. All cephalopods, with the exception of the Nautilidae and the Cirrina (deep-sea octopuses),[1] are able to release ink to confuse predators.[2]
The ink is released from the ink sacs (located between the gills) and is dispersed more widely when its release is accompanied by a jet of water from the siphon. Its dark colour is caused by its main constituent, melanin. Each species of cephalopod produces slightly differently coloured inks; generally, octopuses produce black ink, squid ink is blue-black, and cuttlefish ink is a shade of brown.
A number of other aquatic molluscs have similar responses to attack, including the gastropod clade known as sea hares.
^Hanlon, Roger T. and Messenger, John B. (1999) Cephalopod Behaviour, p. 2. Cambridge University Press. ISBN 0-521-64583-2
^Boyle, Peter; Rodhouse, Paul (2004). Cephalopods : ecology and fisheries. Blackwell. doi:10.1002/9780470995310.ch2. ISBN 978-0-632-06048-1.
Cephalopodink is a dark-coloured or luminous ink released into water by most species of cephalopod, usually as an escape mechanism. All cephalopods, with...
An ink sac is an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopodink. With the exception of nocturnal...
foot. Fishers sometimes call cephalopods "inkfish", referring to their common ability to squirt ink. The study of cephalopods is a branch of malacology known...
with ink and a sharp pointed needle was common in early South India. Several Buddhist and Jain sutras in India were compiled in ink. Cephalopodink, known...
PMID 33257824. Mather, Anderson & Wood (2010), p. 107. Derby, C. D. (2014). "CephalopodInk: Production, Chemistry, Functions and Applications". Marine Drugs. 12...
The cephalopods have a long geological history, with the first nautiloids found in late Cambrian strata, and purported stem-group representatives present...
All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper)...
424–432. doi:10.1016/j.lwt.2008.05.010. Derby, Charles D. (2014-05-12). "CephalopodInk: Production, Chemistry, Functions and Applications". Marine Drugs. 12...
substance. For example, an octopus may emit a puff of atrament (see cephalopodink).[citation needed] In ancient Rome, the term atramentum signified any...
arm hooks, mantle tissues, and ink". In Landman, Neil H.; Davis, Richard Arnold; Mapes, Royal H. (eds.). Cephalopods Present & Past: New Insights and...
most other mollusks, cephalopods like cuttlefish have a closed circulatory system. Like other marine mollusks, cuttlefish have ink stores that are used...
various organisms. A form of melanin makes up the ink used by many cephalopods (see cephalopodink) as a defense mechanism against predators. Melanins...
called squid despite not strictly fitting these criteria. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are...
Cephalopods, which include squids and octopuses, vary enormously in size. The smallest are only about 1 centimetre (0.39 in) long and weigh less than...
Inking may refer to: Inking (attack), act of throwing ink on other person Inking, a defensive activity of certain cephalopods and sea hares Inking (comic...
with a density of 1.27 cm-3, which allows for the inks suspension in water . cuttlefish cephalopodink Kicklighter, Cynthia E.; Shabani, Shkelzen; Johnson...
Ammonoids are extinct spiral shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living coleoids (i.e., octopuses...
is its inking behavior. The ink that cephalopods produce is made of secretions from two different glands that is colored by melanin. The ink that is...
Cephalopod attacks on humans have been reported since ancient times. A significant portion of these attacks are questionable or unverifiable tabloid stories...
squid) and rice dish very similar to seafood paella. It is made with cephalopodink, cuttlefish or squid, rice, garlic, green cubanelle peppers, sweet paprika...
commented that the supposed excreta may have been the discharge of ink by a cephalopod. Pontoppidan wrote of a possible specimen of the krake, "perhaps...
gland produces mucus as well as biologically active compounds. The cephalopodink sac is a modified hypobranchial gland. Gastropods The hypobranchial...
Cephalopods, usually specifically octopuses, squids, nautiluses and cuttlefishes, are most commonly represented in popular culture in the Western world...
(Vampyroteuthis infernalis, lit. 'vampire squid from hell') is a small cephalopod found throughout temperate and tropical oceans in extreme deep sea conditions...
cloud of mucus-rich ink released by many species of cephalopod. The name refers to the similarity in appearance between the cephalopod that released it and...
Global Information
