Search results
Results From The WOW.Com Content Network
Cephalopod ink. 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 ...
An octopus ( pl.: octopuses or octopodes[ a]) is a soft-bodied, eight-limbed mollusc of the order Octopoda ( / ɒkˈtɒpədə /, ok-TOP-ə-də[ 3] ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like other cephalopods, an octopus is bilaterally symmetric with two ...
With the exception of the Nautilidae and the species of octopus belonging to the suborder Cirrina, [47] all known cephalopods have an ink sac, which can be used to expel a cloud of dark ink to confuse predators. [21] This sac is a muscular bag which originated as an extension of the hindgut.
Ink sac. An ink sac is an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopod ink. With the exception of nocturnal and very deep water cephalopods, all Coleoidea (squid, octopus and cuttlefish) which dwell in light conditions have an ink sac, which can be used to expel a cloud of dark ink in ...
The common blanket octopus ( Tremoctopus violaceus) exhibits one of the most extreme sexual size-dimorphism known in any animal near its size or larger. [ 3][ 4] Females may reach 2 m (6.6 ft) in length, whereas the males are 2.4 cm (1 inch). The weight ratio is at least 10,000:1, and can probably reach as much as 40,000:1.
The giant Pacific octopus ( Enteroctopus dofleini ), also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus Enteroctopus and Enteroctopodidae family. Its spatial distribution encompasses much of the coastal North Pacific, from the Mexican state of Baja California, north along the United States' West ...
Classification. O. californiana is one of 14 species in the genus Opisthoteuthis, these species are also collectively known as the flapjack devilfishes (due to the anterior-posterior compression of their bodies). [14] O. californiana is morphologically very similar to Opisthoteuthis albatrossi, and they may be the same species, but the two have ...
The NROL-39 mission patch, depicting the National Reconnaissance Office as an octopus with a long reach. Cephalopods, usually specifically octopuses, squids, nautiluses and cuttlefishes, are most commonly represented in popular culture in the Western world as creatures that spray ink and use their tentacles to persistently grasp at and hold onto objects or living creatures.