With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Octopuses use camouflage and deimatic displays to protect themselves.
text_B: The octopus -LRB- -LSB- ˈɒktpəs -RSB- or ~ -LSB- əpʊs -RSB- -RRB- is a soft-bodied , eight-armed mollusc of the order Octopoda .. armed. Cephalopod limb. mollusc. mollusc. order. order ( biology ). The order is grouped within the class Cephalopoda with squids , cuttlefish and nautiloids .. order. order ( biology ). class. Class ( biology ). Cephalopoda. Cephalopoda. cuttlefish. cuttlefish. Like other cephalopods , the octopus is bilaterally symmetric with two eyes and a beak , with its mouth at the centre point of the arms .. bilaterally symmetric. symmetry in biology. beak. cephalopod beak. The soft body , with its lack of internal or external skeleton , can rapidly alter its shape , appearance and colour , enabling the octopus to squeeze through small gaps .. The mantle cavity is used both for respiration and for locomotion , by expelling a jet of water .. mantle cavity. mantle ( mollusc )#Mantle cavity. respiration. aquatic respiration. locomotion. aquatic locomotion#Jet propulsion. Octopuses have a complex nervous system and excellent sight , and are among the most intelligent and behaviourally diverse of all invertebrates .. Octopuses inhabit various regions of the ocean , including coral reefs , pelagic waters , and the seabed ; some occur in the intertidal zone and others at abyssal depths .. ocean. ocean. pelagic. pelagic. seabed. seabed. intertidal zone. intertidal zone. abyssal depths. abyssal zone. Most species grow fast , mature early and are short-lived .. species. species. During breeding , the male uses a specially adapted arm to deliver a bundle of sperm directly into the female 's mantle cavity , after which he goes into a decline .. mantle cavity. mantle ( mollusc )#Mantle cavity. The female deposits fertilised eggs in a den and cares for them until they hatch , after which she also dies .. Octopuses have numerous strategies for to defend themselves against predators , including the expulsion of ink , the use of camouflage and deimatic displays , their ability to jet quickly through the water , and their ability to hide .. ink. octopus ink. camouflage. camouflage. They trail their eight arms behind them as they swim .. All octopuses are venomous , but only one group , the blue-ringed octopuses , is known to be deadly to humans .. venomous. venomous. Around 300 species are recognised .. species. species. Octopuses appear in mythology as sea monsters like the Kraken of Norway and the Akkorokamui of the Ainu , and probably the Gorgon of ancient Greece .. Kraken. Kraken. Akkorokamui. Akkorokamui. Ainu. Ainu people. Gorgon. Gorgon. ancient Greece. ancient Greece. A battle with an octopus appears in Victor Hugo 's book Toilers of the Sea , inspiring other works such as Ian Fleming 's Octopussy .. Victor Hugo. Victor Hugo. Toilers of the Sea. Toilers of the Sea. Ian Fleming. Ian Fleming. Octopussy. Octopussy and The Living Daylights. Octopuses appear in Japanese erotic art , shunga .. erotic art. erotic art. shunga. shunga. They are eaten by humans in many parts of the world , especially the Mediterranean and the Asian seas .. Mediterranean. Mediterranean cuisine
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