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The particles have a density of 1.27 g cm −3, which may be due to the amount of metals that the ink has in its composition (4.7% in weight). [11] Heteroteuthis dispar is a cephalopod species known for releasing luminous ink. The light comes from a substance produced by a dedicated organ before being transferred into the ink sac. [12]
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 order to ...
Currently, [20] in Monterey Canyon, research is going on with scientists from the Monterey Bay Aquarium Research Institute, with several Opisthoteuthis sp. specimens (including a fertile octopus) that resemble O. californiana (in media these were given the informal name Opisthoteuthis 'adorabilis '). Due to the challenges of mimicking their ...
Link 16 is a TDMA-based secure, jam-resistant, high-speed digital data link that operates in the radio frequency band 960–1,215 MHz, allocated in line with the International Telecommunication Union (ITU) Radio regulations to the aeronautical radionavigation service and to the radionavigation satellite service.
USA-247, also known as NRO Launch 39 or NROL-39, is an American reconnaissance satellite, operated by the National Reconnaissance Office and launched in December 2013. The USA-247 launch received a relatively high level of press coverage due to the mission's choice of logo, which depicts an octopus sitting astride the globe with the motto "Nothing Is Beyond Our Reach". [2]
They also produce ink, which is ejected when the animal is being attacked. This ink paralyzes the olfaction of the attacker, providing time for the argonaut to escape. The female is also able to pull back the web covering of her shell, making a silvery flash, which may deter a predator from attacking.
Tom Brady is no stranger to the Super Bowl, but he was in a peculiar spot for Super Bowl 59: on the mic.. The seven-time Super Bowl champion isn't playing for the Lombardi Trophy anymore, and ...
American traveler Frederick O'Brien (1869–1932) reports during his research in the Marquises Islands that a relative of one of the locals was killed by a large octopus living in the coastal countryside. [6] An undetermined date (sometime in the early 20th century): A diver was attacked by a large octopus in the military port of Toulon.