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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 ...
All octopuses have venom, but few are fatally dangerous. The greater blue-ringed octopus, however, is considered to be one of the most venomous animals known; the venom of one is enough to kill ten adult humans. [3] It uses the neurotoxin tetrodotoxin, which quickly causes respiratory arrest. Estimates of the number of recorded fatalities ...
The Organisation for Counter Terrorist Operations (OCTOPUS) is an elite counter terrorism joint unit of the Andhra Pradesh Police in the state of Andhra Pradesh & and the Telangana Police in the state of Telangana in India.
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.
A two-month-old octopus tries to unscrew the lid of a jar to get hold of its content, a crab, at Denmark's Aquarium in Copenhagen in 2004. Credit - Jorgen Jessen—AFP/Getty Images
Earth Defense Force has roughly five separate continuities as of 2024. However, in general, all entries in the series share a similar basic premise, following the Earth Defense Force (EDF), a specialized multinational defense force established and supported by every country and staffed by the world's militaries, tasked with defending Earth and humanity from external threats.
Pinnoctopus cordiformis in shallow rock pool on the coast near Wellington. Pinnoctopus cordiformis is known as a reef octopus, and has been found around New Zealand in Stewart Island (47˚S) to the south of Leigh (36˚S); they have also been found in the Chatham Islands (35˚S to 48˚S).